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 <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,
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){
76 ieee80211_stop_send_beacons(ieee);
77 ieee80211_start_send_beacons(ieee);
88 int ieee80211_wx_get_freq(struct ieee80211_device *ieee,
89 struct iw_request_info *a,
90 union iwreq_data *wrqu, char *b)
92 struct iw_freq *fwrq = & wrqu->freq;
94 if (ieee->current_network.channel == 0)
96 //NM 0.7.0 will not accept channel any more.
97 fwrq->m = ieee80211_wlan_frequencies[ieee->current_network.channel-1] * 100000;
99 // fwrq->m = ieee->current_network.channel;
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 memset(wrqu->ap_addr.sa_data, 0, ETH_ALEN);
125 memcpy(wrqu->ap_addr.sa_data,
126 ieee->current_network.bssid, ETH_ALEN);
128 spin_unlock_irqrestore(&ieee->lock, flags);
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);
180 int ieee80211_wx_get_essid(struct ieee80211_device *ieee, struct iw_request_info *a,union iwreq_data *wrqu,char *b)
185 if (ieee->iw_mode == IW_MODE_MONITOR)
188 /* We want avoid to give to the user inconsistent infos*/
189 spin_lock_irqsave(&ieee->lock, flags);
191 if (ieee->current_network.ssid[0] == '\0' ||
192 ieee->current_network.ssid_len == 0){
197 if (ieee->state != IEEE80211_LINKED &&
198 ieee->state != IEEE80211_LINKED_SCANNING &&
199 ieee->ssid_set == 0){
203 len = ieee->current_network.ssid_len;
204 wrqu->essid.length = len;
205 strncpy(b,ieee->current_network.ssid,len);
206 wrqu->essid.flags = 1;
209 spin_unlock_irqrestore(&ieee->lock, flags);
215 int ieee80211_wx_set_rate(struct ieee80211_device *ieee,
216 struct iw_request_info *info,
217 union iwreq_data *wrqu, char *extra)
220 u32 target_rate = wrqu->bitrate.value;
222 ieee->rate = target_rate/100000;
223 //FIXME: we might want to limit rate also in management protocols.
229 int ieee80211_wx_get_rate(struct ieee80211_device *ieee,
230 struct iw_request_info *info,
231 union iwreq_data *wrqu, char *extra)
234 tmp_rate = TxCountToDataRate(ieee, ieee->softmac_stats.CurrentShowTxate);
236 wrqu->bitrate.value = tmp_rate * 500000;
242 int ieee80211_wx_set_rts(struct ieee80211_device *ieee,
243 struct iw_request_info *info,
244 union iwreq_data *wrqu, char *extra)
246 if (wrqu->rts.disabled || !wrqu->rts.fixed)
247 ieee->rts = DEFAULT_RTS_THRESHOLD;
250 if (wrqu->rts.value < MIN_RTS_THRESHOLD ||
251 wrqu->rts.value > MAX_RTS_THRESHOLD)
253 ieee->rts = wrqu->rts.value;
258 int ieee80211_wx_get_rts(struct ieee80211_device *ieee,
259 struct iw_request_info *info,
260 union iwreq_data *wrqu, char *extra)
262 wrqu->rts.value = ieee->rts;
263 wrqu->rts.fixed = 0; /* no auto select */
264 wrqu->rts.disabled = (wrqu->rts.value == DEFAULT_RTS_THRESHOLD);
267 int ieee80211_wx_set_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
268 union iwreq_data *wrqu, char *b)
271 ieee->sync_scan_hurryup = 1;
275 if (wrqu->mode == ieee->iw_mode)
278 if (wrqu->mode == IW_MODE_MONITOR){
280 ieee->dev->type = ARPHRD_IEEE80211;
282 ieee->dev->type = ARPHRD_ETHER;
285 if (!ieee->proto_started){
286 ieee->iw_mode = wrqu->mode;
288 ieee80211_stop_protocol(ieee);
289 ieee->iw_mode = wrqu->mode;
290 ieee80211_start_protocol(ieee);
298 void ieee80211_wx_sync_scan_wq(struct work_struct *work)
300 struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, wx_sync_scan_wq);
302 HT_EXTCHNL_OFFSET chan_offset=0;
303 HT_CHANNEL_WIDTH bandwidth=0;
306 chan = ieee->current_network.channel;
307 netif_carrier_off(ieee->dev);
309 if (ieee->data_hard_stop)
310 ieee->data_hard_stop(ieee->dev);
312 ieee80211_stop_send_beacons(ieee);
314 ieee->state = IEEE80211_LINKED_SCANNING;
315 ieee->link_change(ieee->dev);
316 ieee->InitialGainHandler(ieee->dev,IG_Backup);
317 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT && ieee->pHTInfo->bCurBW40MHz) {
319 chan_offset = ieee->pHTInfo->CurSTAExtChnlOffset;
320 bandwidth = (HT_CHANNEL_WIDTH)ieee->pHTInfo->bCurBW40MHz;
321 printk("Scan in 40M, force to 20M first:%d, %d\n", chan_offset, bandwidth);
322 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
324 ieee80211_start_scan_syncro(ieee);
326 printk("Scan in 20M, back to 40M\n");
327 if (chan_offset == HT_EXTCHNL_OFFSET_UPPER)
328 ieee->set_chan(ieee->dev, chan + 2);
329 else if (chan_offset == HT_EXTCHNL_OFFSET_LOWER)
330 ieee->set_chan(ieee->dev, chan - 2);
332 ieee->set_chan(ieee->dev, chan);
333 ieee->SetBWModeHandler(ieee->dev, bandwidth, chan_offset);
335 ieee->set_chan(ieee->dev, chan);
338 ieee->InitialGainHandler(ieee->dev,IG_Restore);
339 ieee->state = IEEE80211_LINKED;
340 ieee->link_change(ieee->dev);
341 // To prevent the immediately calling watch_dog after scan.
342 if(ieee->LinkDetectInfo.NumRecvBcnInPeriod==0||ieee->LinkDetectInfo.NumRecvDataInPeriod==0 )
344 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
345 ieee->LinkDetectInfo.NumRecvDataInPeriod= 1;
347 if (ieee->data_hard_resume)
348 ieee->data_hard_resume(ieee->dev);
350 if(ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
351 ieee80211_start_send_beacons(ieee);
353 netif_carrier_on(ieee->dev);
359 int ieee80211_wx_set_scan(struct ieee80211_device *ieee, struct iw_request_info *a,
360 union iwreq_data *wrqu, char *b)
366 if (ieee->iw_mode == IW_MODE_MONITOR || !(ieee->proto_started)){
371 if ( ieee->state == IEEE80211_LINKED){
372 queue_work(ieee->wq, &ieee->wx_sync_scan_wq);
373 /* intentionally forget to up sem */
382 int ieee80211_wx_set_essid(struct ieee80211_device *ieee,
383 struct iw_request_info *a,
384 union iwreq_data *wrqu, char *extra)
391 ieee->sync_scan_hurryup = 1;
394 proto_started = ieee->proto_started;
396 if (wrqu->essid.length > IW_ESSID_MAX_SIZE){
401 if (ieee->iw_mode == IW_MODE_MONITOR){
407 ieee80211_stop_protocol(ieee);
410 /* this is just to be sure that the GET wx callback
411 * has consisten infos. not needed otherwise
413 spin_lock_irqsave(&ieee->lock, flags);
415 if (wrqu->essid.flags && wrqu->essid.length) {
416 //first flush current network.ssid
417 len = ((wrqu->essid.length-1) < IW_ESSID_MAX_SIZE) ? (wrqu->essid.length-1) : IW_ESSID_MAX_SIZE;
418 strncpy(ieee->current_network.ssid, extra, len+1);
419 ieee->current_network.ssid_len = len+1;
424 ieee->current_network.ssid[0] = '\0';
425 ieee->current_network.ssid_len = 0;
427 spin_unlock_irqrestore(&ieee->lock, flags);
430 ieee80211_start_protocol(ieee);
436 int ieee80211_wx_get_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
437 union iwreq_data *wrqu, char *b)
440 wrqu->mode = ieee->iw_mode;
444 int ieee80211_wx_set_rawtx(struct ieee80211_device *ieee,
445 struct iw_request_info *info,
446 union iwreq_data *wrqu, char *extra)
449 int *parms = (int *)extra;
450 int enable = (parms[0] > 0);
451 short prev = ieee->raw_tx;
460 printk(KERN_INFO"raw TX is %s\n",
461 ieee->raw_tx ? "enabled" : "disabled");
463 if(ieee->iw_mode == IW_MODE_MONITOR)
465 if(prev == 0 && ieee->raw_tx){
466 if (ieee->data_hard_resume)
467 ieee->data_hard_resume(ieee->dev);
469 netif_carrier_on(ieee->dev);
472 if(prev && ieee->raw_tx == 1)
473 netif_carrier_off(ieee->dev);
481 int ieee80211_wx_get_name(struct ieee80211_device *ieee,
482 struct iw_request_info *info,
483 union iwreq_data *wrqu, char *extra)
485 strlcpy(wrqu->name, "802.11", IFNAMSIZ);
486 if (ieee->modulation & IEEE80211_CCK_MODULATION) {
487 strlcat(wrqu->name, "b", IFNAMSIZ);
488 if (ieee->modulation & IEEE80211_OFDM_MODULATION)
489 strlcat(wrqu->name, "/g", IFNAMSIZ);
490 } else if (ieee->modulation & IEEE80211_OFDM_MODULATION) {
491 strlcat(wrqu->name, "g", IFNAMSIZ);
494 if (ieee->mode & (IEEE_N_24G | IEEE_N_5G))
495 strlcat(wrqu->name, "/n", IFNAMSIZ);
497 if ((ieee->state == IEEE80211_LINKED) ||
498 (ieee->state == IEEE80211_LINKED_SCANNING))
499 strlcat(wrqu->name, " linked", IFNAMSIZ);
500 else if (ieee->state != IEEE80211_NOLINK)
501 strlcat(wrqu->name, " link..", IFNAMSIZ);
507 /* this is mostly stolen from hostap */
508 int ieee80211_wx_set_power(struct ieee80211_device *ieee,
509 struct iw_request_info *info,
510 union iwreq_data *wrqu, char *extra)
515 if (wrqu->power.disabled){
516 ieee->ps = IEEE80211_PS_DISABLED;
519 if (wrqu->power.flags & IW_POWER_TIMEOUT) {
520 //ieee->ps_period = wrqu->power.value / 1000;
521 ieee->ps_timeout = wrqu->power.value / 1000;
524 if (wrqu->power.flags & IW_POWER_PERIOD) {
526 //ieee->ps_timeout = wrqu->power.value / 1000;
527 ieee->ps_period = wrqu->power.value / 1000;
531 switch (wrqu->power.flags & IW_POWER_MODE) {
532 case IW_POWER_UNICAST_R:
533 ieee->ps = IEEE80211_PS_UNICAST;
535 case IW_POWER_MULTICAST_R:
536 ieee->ps = IEEE80211_PS_MBCAST;
539 ieee->ps = IEEE80211_PS_UNICAST | IEEE80211_PS_MBCAST;
543 // ieee->ps = IEEE80211_PS_DISABLED;
557 /* this is stolen from hostap */
558 int ieee80211_wx_get_power(struct ieee80211_device *ieee,
559 struct iw_request_info *info,
560 union iwreq_data *wrqu, char *extra)
566 if(ieee->ps == IEEE80211_PS_DISABLED){
567 wrqu->power.disabled = 1;
571 wrqu->power.disabled = 0;
573 if ((wrqu->power.flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) {
574 wrqu->power.flags = IW_POWER_TIMEOUT;
575 wrqu->power.value = ieee->ps_timeout * 1000;
577 // ret = -EOPNOTSUPP;
579 wrqu->power.flags = IW_POWER_PERIOD;
580 wrqu->power.value = ieee->ps_period * 1000;
581 //ieee->current_network.dtim_period * ieee->current_network.beacon_interval * 1024;
584 if ((ieee->ps & (IEEE80211_PS_MBCAST | IEEE80211_PS_UNICAST)) == (IEEE80211_PS_MBCAST | IEEE80211_PS_UNICAST))
585 wrqu->power.flags |= IW_POWER_ALL_R;
586 else if (ieee->ps & IEEE80211_PS_MBCAST)
587 wrqu->power.flags |= IW_POWER_MULTICAST_R;
589 wrqu->power.flags |= IW_POWER_UNICAST_R;
596 EXPORT_SYMBOL(ieee80211_wx_get_essid);
597 EXPORT_SYMBOL(ieee80211_wx_set_essid);
598 EXPORT_SYMBOL(ieee80211_wx_set_rate);
599 EXPORT_SYMBOL(ieee80211_wx_get_rate);
600 EXPORT_SYMBOL(ieee80211_wx_set_wap);
601 EXPORT_SYMBOL(ieee80211_wx_get_wap);
602 EXPORT_SYMBOL(ieee80211_wx_set_mode);
603 EXPORT_SYMBOL(ieee80211_wx_get_mode);
604 EXPORT_SYMBOL(ieee80211_wx_set_scan);
605 EXPORT_SYMBOL(ieee80211_wx_get_freq);
606 EXPORT_SYMBOL(ieee80211_wx_set_freq);
607 EXPORT_SYMBOL(ieee80211_wx_set_rawtx);
608 EXPORT_SYMBOL(ieee80211_wx_get_name);
609 EXPORT_SYMBOL(ieee80211_wx_set_power);
610 EXPORT_SYMBOL(ieee80211_wx_get_power);
611 EXPORT_SYMBOL(ieee80211_wlan_frequencies);
612 EXPORT_SYMBOL(ieee80211_wx_set_rts);
613 EXPORT_SYMBOL(ieee80211_wx_get_rts);