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 //printk("===>mode:%d, halfNmode:%d\n", ieee->mode, ieee->bHalfWirelessN24GMode);
234 if (ieee->mode & (IEEE_A | IEEE_B | IEEE_G))
235 tmp_rate = ieee->rate;
236 else if (ieee->mode & IEEE_N_5G)
238 else if (ieee->mode & IEEE_N_24G)
240 if (ieee->GetHalfNmodeSupportByAPsHandler(ieee->dev))
241 tmp_rate = HTHalfMcsToDataRate(ieee, 15);
243 tmp_rate = HTMcsToDataRate(ieee, 15);
245 wrqu->bitrate.value = tmp_rate * 500000;
251 int ieee80211_wx_set_rts(struct ieee80211_device *ieee,
252 struct iw_request_info *info,
253 union iwreq_data *wrqu, char *extra)
255 if (wrqu->rts.disabled || !wrqu->rts.fixed)
256 ieee->rts = DEFAULT_RTS_THRESHOLD;
259 if (wrqu->rts.value < MIN_RTS_THRESHOLD ||
260 wrqu->rts.value > MAX_RTS_THRESHOLD)
262 ieee->rts = wrqu->rts.value;
267 int ieee80211_wx_get_rts(struct ieee80211_device *ieee,
268 struct iw_request_info *info,
269 union iwreq_data *wrqu, char *extra)
271 wrqu->rts.value = ieee->rts;
272 wrqu->rts.fixed = 0; /* no auto select */
273 wrqu->rts.disabled = (wrqu->rts.value == DEFAULT_RTS_THRESHOLD);
276 int ieee80211_wx_set_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
277 union iwreq_data *wrqu, char *b)
280 ieee->sync_scan_hurryup = 1;
284 if (wrqu->mode == ieee->iw_mode)
287 if (wrqu->mode == IW_MODE_MONITOR){
289 ieee->dev->type = ARPHRD_IEEE80211;
291 ieee->dev->type = ARPHRD_ETHER;
294 if (!ieee->proto_started){
295 ieee->iw_mode = wrqu->mode;
297 ieee80211_stop_protocol(ieee);
298 ieee->iw_mode = wrqu->mode;
299 ieee80211_start_protocol(ieee);
307 void ieee80211_wx_sync_scan_wq(struct work_struct *work)
309 struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, wx_sync_scan_wq);
311 HT_EXTCHNL_OFFSET chan_offset=0;
312 HT_CHANNEL_WIDTH bandwidth=0;
314 static int count = 0;
315 chan = ieee->current_network.channel;
316 netif_carrier_off(ieee->dev);
318 if (ieee->data_hard_stop)
319 ieee->data_hard_stop(ieee->dev);
321 ieee80211_stop_send_beacons(ieee);
323 ieee->state = IEEE80211_LINKED_SCANNING;
324 ieee->link_change(ieee->dev);
325 ieee->InitialGainHandler(ieee->dev,IG_Backup);
326 if (ieee->SetFwCmdHandler)
328 ieee->SetFwCmdHandler(ieee->dev, FW_CMD_DIG_HALT);
329 ieee->SetFwCmdHandler(ieee->dev, FW_CMD_HIGH_PWR_DISABLE);
331 if (ieee->pHTInfo->bCurrentHTSupport && ieee->pHTInfo->bEnableHT && ieee->pHTInfo->bCurBW40MHz) {
333 chan_offset = ieee->pHTInfo->CurSTAExtChnlOffset;
334 bandwidth = (HT_CHANNEL_WIDTH)ieee->pHTInfo->bCurBW40MHz;
335 printk("Scan in 40M, force to 20M first:%d, %d\n", chan_offset, bandwidth);
336 ieee->SetBWModeHandler(ieee->dev, HT_CHANNEL_WIDTH_20, HT_EXTCHNL_OFFSET_NO_EXT);
338 ieee80211_start_scan_syncro(ieee);
340 printk("Scan in 20M, back to 40M\n");
341 if (chan_offset == HT_EXTCHNL_OFFSET_UPPER)
342 ieee->set_chan(ieee->dev, chan + 2);
343 else if (chan_offset == HT_EXTCHNL_OFFSET_LOWER)
344 ieee->set_chan(ieee->dev, chan - 2);
346 ieee->set_chan(ieee->dev, chan);
347 ieee->SetBWModeHandler(ieee->dev, bandwidth, chan_offset);
349 ieee->set_chan(ieee->dev, chan);
352 ieee->InitialGainHandler(ieee->dev,IG_Restore);
353 if (ieee->SetFwCmdHandler)
355 ieee->SetFwCmdHandler(ieee->dev, FW_CMD_DIG_RESUME);
356 ieee->SetFwCmdHandler(ieee->dev, FW_CMD_HIGH_PWR_ENABLE);
358 ieee->state = IEEE80211_LINKED;
359 ieee->link_change(ieee->dev);
360 // To prevent the immediately calling watch_dog after scan.
361 if(ieee->LinkDetectInfo.NumRecvBcnInPeriod==0||ieee->LinkDetectInfo.NumRecvDataInPeriod==0 )
363 ieee->LinkDetectInfo.NumRecvBcnInPeriod = 1;
364 ieee->LinkDetectInfo.NumRecvDataInPeriod= 1;
366 if (ieee->data_hard_resume)
367 ieee->data_hard_resume(ieee->dev);
369 if(ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
370 ieee80211_start_send_beacons(ieee);
372 netif_carrier_on(ieee->dev);
378 int ieee80211_wx_set_scan(struct ieee80211_device *ieee, struct iw_request_info *a,
379 union iwreq_data *wrqu, char *b)
385 if (ieee->iw_mode == IW_MODE_MONITOR || !(ieee->proto_started)){
390 if ( ieee->state == IEEE80211_LINKED){
391 queue_work(ieee->wq, &ieee->wx_sync_scan_wq);
392 /* intentionally forget to up sem */
401 int ieee80211_wx_set_essid(struct ieee80211_device *ieee,
402 struct iw_request_info *a,
403 union iwreq_data *wrqu, char *extra)
410 ieee->sync_scan_hurryup = 1;
413 proto_started = ieee->proto_started;
415 if (wrqu->essid.length > IW_ESSID_MAX_SIZE){
420 if (ieee->iw_mode == IW_MODE_MONITOR){
426 ieee80211_stop_protocol(ieee);
429 /* this is just to be sure that the GET wx callback
430 * has consisten infos. not needed otherwise
432 spin_lock_irqsave(&ieee->lock, flags);
434 if (wrqu->essid.flags && wrqu->essid.length) {
435 //first flush current network.ssid
436 len = ((wrqu->essid.length-1) < IW_ESSID_MAX_SIZE) ? (wrqu->essid.length-1) : IW_ESSID_MAX_SIZE;
437 strncpy(ieee->current_network.ssid, extra, len+1);
438 ieee->current_network.ssid_len = len+1;
443 ieee->current_network.ssid[0] = '\0';
444 ieee->current_network.ssid_len = 0;
446 spin_unlock_irqrestore(&ieee->lock, flags);
449 ieee80211_start_protocol(ieee);
455 int ieee80211_wx_get_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
456 union iwreq_data *wrqu, char *b)
459 wrqu->mode = ieee->iw_mode;
463 int ieee80211_wx_set_rawtx(struct ieee80211_device *ieee,
464 struct iw_request_info *info,
465 union iwreq_data *wrqu, char *extra)
468 int *parms = (int *)extra;
469 int enable = (parms[0] > 0);
470 short prev = ieee->raw_tx;
479 printk(KERN_INFO"raw TX is %s\n",
480 ieee->raw_tx ? "enabled" : "disabled");
482 if(ieee->iw_mode == IW_MODE_MONITOR)
484 if(prev == 0 && ieee->raw_tx){
485 if (ieee->data_hard_resume)
486 ieee->data_hard_resume(ieee->dev);
488 netif_carrier_on(ieee->dev);
491 if(prev && ieee->raw_tx == 1)
492 netif_carrier_off(ieee->dev);
500 int ieee80211_wx_get_name(struct ieee80211_device *ieee,
501 struct iw_request_info *info,
502 union iwreq_data *wrqu, char *extra)
504 strlcpy(wrqu->name, "802.11", IFNAMSIZ);
505 if(ieee->modulation & IEEE80211_CCK_MODULATION){
506 strlcat(wrqu->name, "b", IFNAMSIZ);
507 if(ieee->modulation & IEEE80211_OFDM_MODULATION)
508 strlcat(wrqu->name, "/g", IFNAMSIZ);
509 }else if(ieee->modulation & IEEE80211_OFDM_MODULATION)
510 strlcat(wrqu->name, "g", IFNAMSIZ);
511 if (ieee->mode & (IEEE_N_24G | IEEE_N_5G))
512 strlcat(wrqu->name, "/n", IFNAMSIZ);
514 if((ieee->state == IEEE80211_LINKED) ||
515 (ieee->state == IEEE80211_LINKED_SCANNING))
516 strlcat(wrqu->name, " link", IFNAMSIZ);
517 else if(ieee->state != IEEE80211_NOLINK)
518 strlcat(wrqu->name, " .....", IFNAMSIZ);
525 /* this is mostly stolen from hostap */
526 int ieee80211_wx_set_power(struct ieee80211_device *ieee,
527 struct iw_request_info *info,
528 union iwreq_data *wrqu, char *extra)
533 (!ieee->sta_wake_up) ||
534 // (!ieee->ps_request_tx_ack) ||
535 (!ieee->enter_sleep_state) ||
536 (!ieee->ps_is_queue_empty)){
538 // printk("ERROR. PS mode is tryied to be use but driver missed a callback\n\n");
545 if (wrqu->power.disabled){
546 ieee->ps = IEEE80211_PS_DISABLED;
549 if (wrqu->power.flags & IW_POWER_TIMEOUT) {
550 //ieee->ps_period = wrqu->power.value / 1000;
551 ieee->ps_timeout = wrqu->power.value / 1000;
554 if (wrqu->power.flags & IW_POWER_PERIOD) {
556 //ieee->ps_timeout = wrqu->power.value / 1000;
557 ieee->ps_period = wrqu->power.value / 1000;
561 switch (wrqu->power.flags & IW_POWER_MODE) {
562 case IW_POWER_UNICAST_R:
563 ieee->ps = IEEE80211_PS_UNICAST;
565 case IW_POWER_MULTICAST_R:
566 ieee->ps = IEEE80211_PS_MBCAST;
569 ieee->ps = IEEE80211_PS_UNICAST | IEEE80211_PS_MBCAST;
573 // ieee->ps = IEEE80211_PS_DISABLED;
587 /* this is stolen from hostap */
588 int ieee80211_wx_get_power(struct ieee80211_device *ieee,
589 struct iw_request_info *info,
590 union iwreq_data *wrqu, char *extra)
596 if(ieee->ps == IEEE80211_PS_DISABLED){
597 wrqu->power.disabled = 1;
601 wrqu->power.disabled = 0;
603 if ((wrqu->power.flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) {
604 wrqu->power.flags = IW_POWER_TIMEOUT;
605 wrqu->power.value = ieee->ps_timeout * 1000;
607 // ret = -EOPNOTSUPP;
609 wrqu->power.flags = IW_POWER_PERIOD;
610 wrqu->power.value = ieee->ps_period * 1000;
611 //ieee->current_network.dtim_period * ieee->current_network.beacon_interval * 1024;
614 if ((ieee->ps & (IEEE80211_PS_MBCAST | IEEE80211_PS_UNICAST)) == (IEEE80211_PS_MBCAST | IEEE80211_PS_UNICAST))
615 wrqu->power.flags |= IW_POWER_ALL_R;
616 else if (ieee->ps & IEEE80211_PS_MBCAST)
617 wrqu->power.flags |= IW_POWER_MULTICAST_R;
619 wrqu->power.flags |= IW_POWER_UNICAST_R;