1 /******************************************************************************
3 * Copyright(c) 2009-2010 Realtek Corporation.
5 *****************************************************************************/
9 #ifdef CONFIG_IOCTL_CFG80211
11 #include <rtw_wifi_regd.h>
13 static struct country_code_to_enum_rd allCountries[] = {
14 {COUNTRY_CODE_USER, "RD"},
18 * REG_RULE(freq start, freq end, bandwidth, max gain, eirp, reg_flags)
22 *Only these channels all allow active
23 *scan on all world regulatory domains
26 /* 2G chan 01 - chan 11 */
27 #define RTW_2GHZ_CH01_11 \
28 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0)
31 *We enable active scan on these a case
32 *by case basis by regulatory domain
35 /* 2G chan 12 - chan 13, PASSIV SCAN */
36 #define RTW_2GHZ_CH12_13 \
37 REG_RULE(2467-10, 2472+10, 40, 0, 20, \
38 NL80211_RRF_PASSIVE_SCAN)
40 /* 2G chan 14, PASSIVS SCAN, NO OFDM (B only) */
41 #define RTW_2GHZ_CH14 \
42 REG_RULE(2484-10, 2484+10, 40, 0, 20, \
43 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM)
45 /* 5G chan 36 - chan 64 */
46 #define RTW_5GHZ_5150_5350 \
47 REG_RULE(5150-10, 5350+10, 40, 0, 30, \
48 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
50 /* 5G chan 100 - chan 165 */
51 #define RTW_5GHZ_5470_5850 \
52 REG_RULE(5470-10, 5850+10, 40, 0, 30, \
53 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
55 /* 5G chan 149 - chan 165 */
56 #define RTW_5GHZ_5725_5850 \
57 REG_RULE(5725-10, 5850+10, 40, 0, 30, \
58 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
60 /* 5G chan 36 - chan 165 */
61 #define RTW_5GHZ_5150_5850 \
62 REG_RULE(5150-10, 5850+10, 40, 0, 30, \
63 NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
65 static const struct ieee80211_regdomain rtw_regdom_rd = {
75 static const struct ieee80211_regdomain rtw_regdom_11 = {
83 static const struct ieee80211_regdomain rtw_regdom_12_13 = {
92 static const struct ieee80211_regdomain rtw_regdom_no_midband = {
102 static const struct ieee80211_regdomain rtw_regdom_60_64 = {
112 static const struct ieee80211_regdomain rtw_regdom_14_60_64 = {
123 static const struct ieee80211_regdomain rtw_regdom_14 = {
134 static struct rtw_regulatory *rtw_regd;
137 static bool _rtw_is_radar_freq(u16 center_freq)
139 return (center_freq >= 5260 && center_freq <= 5700);
143 static void _rtw_reg_apply_beaconing_flags(struct wiphy *wiphy,
144 enum nl80211_reg_initiator initiator)
146 enum ieee80211_band band;
147 struct ieee80211_supported_band *sband;
148 const struct ieee80211_reg_rule *reg_rule;
149 struct ieee80211_channel *ch;
154 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
156 if (!wiphy->bands[band])
159 sband = wiphy->bands[band];
161 for (i = 0; i < sband->n_channels; i++) {
162 ch = &sband->channels[i];
163 if (_rtw_is_radar_freq(ch->center_freq) ||
164 (ch->flags & IEEE80211_CHAN_RADAR))
166 if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
167 r = freq_reg_info(wiphy, ch->center_freq,
168 bandwidth, ®_rule);
173 *If 11d had a rule for this channel ensure
174 *we enable adhoc/beaconing if it allows us to
175 *use it. Note that we would have disabled it
176 *by applying our static world regdomain by
177 *default during init, prior to calling our
181 if (!(reg_rule->flags & NL80211_RRF_NO_IBSS))
182 ch->flags &= ~IEEE80211_CHAN_NO_IBSS;
185 NL80211_RRF_PASSIVE_SCAN))
187 ~IEEE80211_CHAN_PASSIVE_SCAN;
189 if (ch->beacon_found)
190 ch->flags &= ~(IEEE80211_CHAN_NO_IBSS |
191 IEEE80211_CHAN_PASSIVE_SCAN);
197 /* Allows active scan scan on Ch 12 and 13 */
198 static void _rtw_reg_apply_active_scan_flags(struct wiphy *wiphy,
199 enum nl80211_reg_initiator
202 struct ieee80211_supported_band *sband;
203 struct ieee80211_channel *ch;
204 const struct ieee80211_reg_rule *reg_rule;
208 if (!wiphy->bands[IEEE80211_BAND_2GHZ])
210 sband = wiphy->bands[IEEE80211_BAND_2GHZ];
213 * If no country IE has been received always enable active scan
214 * on these channels. This is only done for specific regulatory SKUs
216 if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
217 ch = &sband->channels[11]; /* CH 12 */
218 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
219 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
220 ch = &sband->channels[12]; /* CH 13 */
221 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
222 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
227 * If a country IE has been received check its rule for this
228 * channel first before enabling active scan. The passive scan
229 * would have been enforced by the initial processing of our
230 * custom regulatory domain.
233 ch = &sband->channels[11]; /* CH 12 */
234 r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
236 if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
237 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
238 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
241 ch = &sband->channels[12]; /* CH 13 */
242 r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
244 if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
245 if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
246 ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
252 * Always apply Radar/DFS rules on
253 * freq range 5260 MHz - 5700 MHz
255 static void _rtw_reg_apply_radar_flags(struct wiphy *wiphy)
257 struct ieee80211_supported_band *sband;
258 struct ieee80211_channel *ch;
261 if (!wiphy->bands[IEEE80211_BAND_5GHZ])
264 sband = wiphy->bands[IEEE80211_BAND_5GHZ];
266 for (i = 0; i < sband->n_channels; i++) {
267 ch = &sband->channels[i];
268 if (!_rtw_is_radar_freq(ch->center_freq))
271 if (!(ch->flags & IEEE80211_CHAN_DISABLED)) {
272 ch->flags |= IEEE80211_CHAN_RADAR;
273 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0))
274 ch->flags |= (IEEE80211_CHAN_NO_IBSS|IEEE80211_CHAN_PASSIVE_SCAN);
276 ch->flags |= IEEE80211_CHAN_NO_IR;
283 * We always enable radar detection/DFS on this
284 * frequency range. Additionally we also apply on
285 * this frequency range:
286 * - If STA mode does not yet have DFS supports disable
288 * - If adhoc mode does not support DFS yet then disable
289 * adhoc in the frequency.
290 * - If AP mode does not yet support radar detection/DFS
291 * do not allow AP mode
293 if (!(ch->flags & IEEE80211_CHAN_DISABLED))
294 ch->flags |= IEEE80211_CHAN_RADAR |
295 IEEE80211_CHAN_NO_IBSS |
296 IEEE80211_CHAN_PASSIVE_SCAN;
301 static int rtw_ieee80211_channel_to_frequency(int chan, int band)
303 /* see 802.11 17.3.8.3.2 and Annex J
304 * there are overlapping channel numbers in 5GHz and 2GHz bands */
306 if (band == IEEE80211_BAND_5GHZ) {
307 if (chan >= 182 && chan <= 196)
308 return 4000 + chan * 5;
310 return 5000 + chan * 5;
311 } else { /* IEEE80211_BAND_2GHZ */
315 return 2407 + chan * 5;
317 return 0; /* not supported */
321 static void _rtw_reg_apply_flags(struct wiphy *wiphy)
323 #if 1 // by channel plan
324 _adapter *padapter = wiphy_to_adapter(wiphy);
325 u8 channel_plan = padapter->mlmepriv.ChannelPlan;
326 struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
327 RT_CHANNEL_INFO *channel_set = pmlmeext->channel_set;
328 u8 max_chan_nums = pmlmeext->max_chan_nums;
330 struct ieee80211_supported_band *sband;
331 struct ieee80211_channel *ch;
336 // all channels disable
337 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
338 sband = wiphy->bands[i];
341 for (j = 0; j < sband->n_channels; j++) {
342 ch = &sband->channels[j];
345 ch->flags = IEEE80211_CHAN_DISABLED;
350 // channels apply by channel plans.
351 for (i = 0; i < max_chan_nums; i++) {
352 channel = channel_set[i].ChannelNum;
355 rtw_ieee80211_channel_to_frequency(channel,
356 IEEE80211_BAND_2GHZ);
359 rtw_ieee80211_channel_to_frequency(channel,
360 IEEE80211_BAND_5GHZ);
363 ch = ieee80211_get_channel(wiphy, freq);
365 if (channel_set[i].ScanType == SCAN_PASSIVE) {
366 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0))
367 ch->flags = (IEEE80211_CHAN_NO_IBSS|IEEE80211_CHAN_PASSIVE_SCAN);
369 ch->flags = IEEE80211_CHAN_NO_IR;
379 struct ieee80211_supported_band *sband;
380 struct ieee80211_channel *ch;
383 { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56,
384 60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140,
391 for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
392 sband = wiphy->bands[i];
395 for (j = 0; j < sband->n_channels; j++) {
396 ch = &sband->channels[j];
399 ch->flags = IEEE80211_CHAN_DISABLED;
403 for (i = 0; i < 37; i++) {
404 channel = channels[i];
407 rtw_ieee80211_channel_to_frequency(channel,
408 IEEE80211_BAND_2GHZ);
411 rtw_ieee80211_channel_to_frequency(channel,
412 IEEE80211_BAND_5GHZ);
414 ch = ieee80211_get_channel(wiphy, freq);
419 ch->flags = 0; //IEEE80211_CHAN_PASSIVE_SCAN;
421 //printk("%s: freq %d(%d) flag 0x%02X \n", __func__, freq, channel, ch->flags);
426 static void _rtw_reg_apply_world_flags(struct wiphy *wiphy,
427 enum nl80211_reg_initiator initiator,
428 struct rtw_regulatory *reg)
430 //_rtw_reg_apply_beaconing_flags(wiphy, initiator);
431 //_rtw_reg_apply_active_scan_flags(wiphy, initiator);
435 static int _rtw_reg_notifier_apply(struct wiphy *wiphy,
436 struct regulatory_request *request,
437 struct rtw_regulatory *reg)
440 /* Hard code flags */
441 _rtw_reg_apply_flags(wiphy);
443 /* We always apply this */
444 _rtw_reg_apply_radar_flags(wiphy);
446 switch (request->initiator) {
447 case NL80211_REGDOM_SET_BY_DRIVER:
448 DBG_8192C("%s: %s\n", __func__, "NL80211_REGDOM_SET_BY_DRIVER");
449 _rtw_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER,
452 case NL80211_REGDOM_SET_BY_CORE:
453 DBG_8192C("%s: %s\n", __func__,
454 "NL80211_REGDOM_SET_BY_CORE to DRV");
455 _rtw_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER,
458 case NL80211_REGDOM_SET_BY_USER:
459 DBG_8192C("%s: %s\n", __func__,
460 "NL80211_REGDOM_SET_BY_USER to DRV");
461 _rtw_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER,
464 case NL80211_REGDOM_SET_BY_COUNTRY_IE:
465 DBG_8192C("%s: %s\n", __func__,
466 "NL80211_REGDOM_SET_BY_COUNTRY_IE");
467 _rtw_reg_apply_world_flags(wiphy, request->initiator, reg);
474 static const struct ieee80211_regdomain *_rtw_regdomain_select(struct
479 switch (reg->country_code) {
480 case COUNTRY_CODE_USER:
482 return &rtw_regdom_rd;
485 return &rtw_regdom_rd;
489 void _rtw_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
491 struct rtw_regulatory *reg = NULL;
493 DBG_8192C("%s\n", __func__);
495 _rtw_reg_notifier_apply(wiphy, request, reg);
498 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0))
499 int rtw_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
501 void rtw_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
504 _rtw_reg_notifier(wiphy, request);
505 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,9,0))
510 void rtw_reg_notify_by_driver(_adapter *adapter)
512 if ((adapter->rtw_wdev != NULL) && (adapter->rtw_wdev->wiphy)) {
513 struct regulatory_request request;
514 request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
515 rtw_reg_notifier(adapter->rtw_wdev->wiphy, &request);
519 static void _rtw_regd_init_wiphy(struct rtw_regulatory *reg, struct wiphy *wiphy)
521 const struct ieee80211_regdomain *regd;
523 wiphy->reg_notifier = rtw_reg_notifier;
525 #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,14,0))
526 wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
527 wiphy->flags &= ~WIPHY_FLAG_STRICT_REGULATORY;
528 wiphy->flags &= ~WIPHY_FLAG_DISABLE_BEACON_HINTS;
530 wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
531 wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG;
532 wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS;
535 regd = _rtw_regdomain_select(reg);
536 wiphy_apply_custom_regulatory(wiphy, regd);
538 /* Hard code flags */
539 _rtw_reg_apply_flags(wiphy);
540 _rtw_reg_apply_radar_flags(wiphy);
541 _rtw_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg);
544 static struct country_code_to_enum_rd *_rtw_regd_find_country(u16 countrycode)
548 for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
549 if (allCountries[i].countrycode == countrycode)
550 return &allCountries[i];
555 int rtw_regd_init(_adapter * padapter)
557 struct wiphy *wiphy = padapter->rtw_wdev->wiphy;
560 if (rtw_regd == NULL) {
561 rtw_regd = (struct rtw_regulatory *)
562 rtw_malloc(sizeof(struct rtw_regulatory));
564 rtw_regd->alpha2[0] = '9';
565 rtw_regd->alpha2[1] = '9';
567 rtw_regd->country_code = COUNTRY_CODE_USER;
570 DBG_8192C("%s: Country alpha2 being used: %c%c\n",
571 __func__, rtw_regd->alpha2[0], rtw_regd->alpha2[1]);
574 _rtw_regd_init_wiphy(NULL, wiphy);
578 #endif //CONFIG_IOCTL_CFG80211