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rtl8192eu-linux-driver/os_dep/linux/wifi_regd.c
Magnus Bergmark 1387cf623d
The official RTL8192EU linux driver from D-Link Australia 
Version information: 20140812_rtl8192EU_linux_v4.3.1.1_11320
  2014-08-12
  version 4.3.1.1_11320
Source:
  ftp://files.dlink.com.au/products/DWA-131/REV_E/Drivers/DWA-131_Linux_driver_v4.3.1.1.zip

This version does not currently work on newer kernels, but it does
contain USB ID 2001:3319, which a lot of other repos in GitHub does not.
2015-08-18 21:03:11 +02:00

547 lines
13 KiB
C
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/******************************************************************************
*
* Copyright(c) 2009-2010 Realtek Corporation.
*
*****************************************************************************/
#include <drv_types.h>
#ifdef CONFIG_IOCTL_CFG80211
#include <rtw_wifi_regd.h>
static struct country_code_to_enum_rd allCountries[] = {
{COUNTRY_CODE_USER, "RD"},
};
/*
* REG_RULE(freq start, freq end, bandwidth, max gain, eirp, reg_flags)
*/
/*
*Only these channels all allow active
*scan on all world regulatory domains
*/
/* 2G chan 01 - chan 11 */
#define RTW_2GHZ_CH01_11 \
REG_RULE(2412-10, 2462+10, 40, 0, 20, 0)
/*
*We enable active scan on these a case
*by case basis by regulatory domain
*/
/* 2G chan 12 - chan 13, PASSIV SCAN */
#define RTW_2GHZ_CH12_13 \
REG_RULE(2467-10, 2472+10, 40, 0, 20, \
NL80211_RRF_PASSIVE_SCAN)
/* 2G chan 14, PASSIVS SCAN, NO OFDM (B only) */
#define RTW_2GHZ_CH14 \
REG_RULE(2484-10, 2484+10, 40, 0, 20, \
NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_OFDM)
/* 5G chan 36 - chan 64 */
#define RTW_5GHZ_5150_5350 \
REG_RULE(5150-10, 5350+10, 40, 0, 30, \
NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
/* 5G chan 100 - chan 165 */
#define RTW_5GHZ_5470_5850 \
REG_RULE(5470-10, 5850+10, 40, 0, 30, \
NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
/* 5G chan 149 - chan 165 */
#define RTW_5GHZ_5725_5850 \
REG_RULE(5725-10, 5850+10, 40, 0, 30, \
NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
/* 5G chan 36 - chan 165 */
#define RTW_5GHZ_5150_5850 \
REG_RULE(5150-10, 5850+10, 40, 0, 30, \
NL80211_RRF_PASSIVE_SCAN | NL80211_RRF_NO_IBSS)
static const struct ieee80211_regdomain rtw_regdom_rd = {
.n_reg_rules = 3,
.alpha2 = "99",
.reg_rules = {
RTW_2GHZ_CH01_11,
RTW_2GHZ_CH12_13,
RTW_5GHZ_5150_5850,
}
};
static const struct ieee80211_regdomain rtw_regdom_11 = {
.n_reg_rules = 1,
.alpha2 = "99",
.reg_rules = {
RTW_2GHZ_CH01_11,
}
};
static const struct ieee80211_regdomain rtw_regdom_12_13 = {
.n_reg_rules = 2,
.alpha2 = "99",
.reg_rules = {
RTW_2GHZ_CH01_11,
RTW_2GHZ_CH12_13,
}
};
static const struct ieee80211_regdomain rtw_regdom_no_midband = {
.n_reg_rules = 3,
.alpha2 = "99",
.reg_rules = {
RTW_2GHZ_CH01_11,
RTW_5GHZ_5150_5350,
RTW_5GHZ_5725_5850,
}
};
static const struct ieee80211_regdomain rtw_regdom_60_64 = {
.n_reg_rules = 3,
.alpha2 = "99",
.reg_rules = {
RTW_2GHZ_CH01_11,
RTW_2GHZ_CH12_13,
RTW_5GHZ_5725_5850,
}
};
static const struct ieee80211_regdomain rtw_regdom_14_60_64 = {
.n_reg_rules = 4,
.alpha2 = "99",
.reg_rules = {
RTW_2GHZ_CH01_11,
RTW_2GHZ_CH12_13,
RTW_2GHZ_CH14,
RTW_5GHZ_5725_5850,
}
};
static const struct ieee80211_regdomain rtw_regdom_14 = {
.n_reg_rules = 3,
.alpha2 = "99",
.reg_rules = {
RTW_2GHZ_CH01_11,
RTW_2GHZ_CH12_13,
RTW_2GHZ_CH14,
}
};
#if 0
static struct rtw_regulatory *rtw_regd;
#endif
static bool _rtw_is_radar_freq(u16 center_freq)
{
return (center_freq >= 5260 && center_freq <= 5700);
}
#if 0 // not_yet
static void _rtw_reg_apply_beaconing_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator)
{
enum ieee80211_band band;
struct ieee80211_supported_band *sband;
const struct ieee80211_reg_rule *reg_rule;
struct ieee80211_channel *ch;
unsigned int i;
u32 bandwidth = 0;
int r;
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (!wiphy->bands[band])
continue;
sband = wiphy->bands[band];
for (i = 0; i < sband->n_channels; i++) {
ch = &sband->channels[i];
if (_rtw_is_radar_freq(ch->center_freq) ||
(ch->flags & IEEE80211_CHAN_RADAR))
continue;
if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
r = freq_reg_info(wiphy, ch->center_freq,
bandwidth, &reg_rule);
if (r)
continue;
/*
*If 11d had a rule for this channel ensure
*we enable adhoc/beaconing if it allows us to
*use it. Note that we would have disabled it
*by applying our static world regdomain by
*default during init, prior to calling our
*regulatory_hint().
*/
if (!(reg_rule->flags & NL80211_RRF_NO_IBSS))
ch->flags &= ~IEEE80211_CHAN_NO_IBSS;
if (!
(reg_rule->flags &
NL80211_RRF_PASSIVE_SCAN))
ch->flags &=
~IEEE80211_CHAN_PASSIVE_SCAN;
} else {
if (ch->beacon_found)
ch->flags &= ~(IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN);
}
}
}
}
/* Allows active scan scan on Ch 12 and 13 */
static void _rtw_reg_apply_active_scan_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator
initiator)
{
struct ieee80211_supported_band *sband;
struct ieee80211_channel *ch;
const struct ieee80211_reg_rule *reg_rule;
u32 bandwidth = 0;
int r;
if (!wiphy->bands[IEEE80211_BAND_2GHZ])
return;
sband = wiphy->bands[IEEE80211_BAND_2GHZ];
/*
* If no country IE has been received always enable active scan
* on these channels. This is only done for specific regulatory SKUs
*/
if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) {
ch = &sband->channels[11]; /* CH 12 */
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
ch = &sband->channels[12]; /* CH 13 */
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
return;
}
/*
* If a country IE has been received check its rule for this
* channel first before enabling active scan. The passive scan
* would have been enforced by the initial processing of our
* custom regulatory domain.
*/
ch = &sband->channels[11]; /* CH 12 */
r = freq_reg_info(wiphy, ch->center_freq, bandwidth, &reg_rule);
if (!r) {
if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
}
ch = &sband->channels[12]; /* CH 13 */
r = freq_reg_info(wiphy, ch->center_freq, bandwidth, &reg_rule);
if (!r) {
if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
}
}
#endif
/*
* Always apply Radar/DFS rules on
* freq range 5260 MHz - 5700 MHz
*/
static void _rtw_reg_apply_radar_flags(struct wiphy *wiphy)
{
struct ieee80211_supported_band *sband;
struct ieee80211_channel *ch;
unsigned int i;
if (!wiphy->bands[IEEE80211_BAND_5GHZ])
return;
sband = wiphy->bands[IEEE80211_BAND_5GHZ];
for (i = 0; i < sband->n_channels; i++) {
ch = &sband->channels[i];
if (!_rtw_is_radar_freq(ch->center_freq))
continue;
#ifdef CONFIG_DFS
if (!(ch->flags & IEEE80211_CHAN_DISABLED))
ch->flags |= IEEE80211_CHAN_RADAR |
IEEE80211_CHAN_NO_IBSS;
#endif
#if 0
/*
* We always enable radar detection/DFS on this
* frequency range. Additionally we also apply on
* this frequency range:
* - If STA mode does not yet have DFS supports disable
* active scanning
* - If adhoc mode does not support DFS yet then disable
* adhoc in the frequency.
* - If AP mode does not yet support radar detection/DFS
* do not allow AP mode
*/
if (!(ch->flags & IEEE80211_CHAN_DISABLED))
ch->flags |= IEEE80211_CHAN_RADAR |
IEEE80211_CHAN_NO_IBSS |
IEEE80211_CHAN_PASSIVE_SCAN;
#endif
}
}
static int rtw_ieee80211_channel_to_frequency(int chan, int band)
{
/* see 802.11 17.3.8.3.2 and Annex J
* there are overlapping channel numbers in 5GHz and 2GHz bands */
if (band == IEEE80211_BAND_5GHZ) {
if (chan >= 182 && chan <= 196)
return 4000 + chan * 5;
else
return 5000 + chan * 5;
} else { /* IEEE80211_BAND_2GHZ */
if (chan == 14)
return 2484;
else if (chan < 14)
return 2407 + chan * 5;
else
return 0; /* not supported */
}
}
static void _rtw_reg_apply_flags(struct wiphy *wiphy)
{
#if 1 // by channel plan
_adapter *padapter = wiphy_to_adapter(wiphy);
u8 channel_plan = padapter->mlmepriv.ChannelPlan;
struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
RT_CHANNEL_INFO *channel_set = pmlmeext->channel_set;
u8 max_chan_nums = pmlmeext->max_chan_nums;
struct ieee80211_supported_band *sband;
struct ieee80211_channel *ch;
unsigned int i, j;
u16 channel;
u32 freq;
// all channels disable
for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
sband = wiphy->bands[i];
if (sband) {
for (j = 0; j < sband->n_channels; j++) {
ch = &sband->channels[j];
if (ch)
ch->flags = IEEE80211_CHAN_DISABLED;
}
}
}
// channels apply by channel plans.
for (i = 0; i < max_chan_nums; i++) {
channel = channel_set[i].ChannelNum;
if (channel <= 14)
freq =
rtw_ieee80211_channel_to_frequency(channel,
IEEE80211_BAND_2GHZ);
else
freq =
rtw_ieee80211_channel_to_frequency(channel,
IEEE80211_BAND_5GHZ);
ch = ieee80211_get_channel(wiphy, freq);
if (ch) {
if (channel_set[i].ScanType == SCAN_PASSIVE)
ch->flags = IEEE80211_CHAN_PASSIVE_SCAN;
else
ch->flags = 0;
}
}
#else
struct ieee80211_supported_band *sband;
struct ieee80211_channel *ch;
unsigned int i, j;
u16 channels[37] =
{ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 36, 40, 44, 48, 52, 56,
60, 64, 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140,
149, 153,
157, 161, 165
};
u16 channel;
u32 freq;
for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
sband = wiphy->bands[i];
if (sband)
for (j = 0; j < sband->n_channels; j++) {
ch = &sband->channels[j];
if (ch)
ch->flags = IEEE80211_CHAN_DISABLED;
}
}
for (i = 0; i < 37; i++) {
channel = channels[i];
if (channel <= 14)
freq =
rtw_ieee80211_channel_to_frequency(channel,
IEEE80211_BAND_2GHZ);
else
freq =
rtw_ieee80211_channel_to_frequency(channel,
IEEE80211_BAND_5GHZ);
ch = ieee80211_get_channel(wiphy, freq);
if (ch) {
if (channel <= 11)
ch->flags = 0;
else
ch->flags = 0; //IEEE80211_CHAN_PASSIVE_SCAN;
}
//printk("%s: freq %d(%d) flag 0x%02X \n", __func__, freq, channel, ch->flags);
}
#endif
}
static void _rtw_reg_apply_world_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator,
struct rtw_regulatory *reg)
{
//_rtw_reg_apply_beaconing_flags(wiphy, initiator);
//_rtw_reg_apply_active_scan_flags(wiphy, initiator);
return;
}
static int _rtw_reg_notifier_apply(struct wiphy *wiphy,
struct regulatory_request *request,
struct rtw_regulatory *reg)
{
/* Hard code flags */
_rtw_reg_apply_flags(wiphy);
/* We always apply this */
_rtw_reg_apply_radar_flags(wiphy);
switch (request->initiator) {
case NL80211_REGDOM_SET_BY_DRIVER:
DBG_8192C("%s: %s\n", __func__, "NL80211_REGDOM_SET_BY_DRIVER");
_rtw_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER,
reg);
break;
case NL80211_REGDOM_SET_BY_CORE:
DBG_8192C("%s: %s\n", __func__,
"NL80211_REGDOM_SET_BY_CORE to DRV");
_rtw_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER,
reg);
break;
case NL80211_REGDOM_SET_BY_USER:
DBG_8192C("%s: %s\n", __func__,
"NL80211_REGDOM_SET_BY_USER to DRV");
_rtw_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER,
reg);
break;
case NL80211_REGDOM_SET_BY_COUNTRY_IE:
DBG_8192C("%s: %s\n", __func__,
"NL80211_REGDOM_SET_BY_COUNTRY_IE");
_rtw_reg_apply_world_flags(wiphy, request->initiator, reg);
break;
}
return 0;
}
static const struct ieee80211_regdomain *_rtw_regdomain_select(struct
rtw_regulatory
*reg)
{
#if 0
switch (reg->country_code) {
case COUNTRY_CODE_USER:
default:
return &rtw_regdom_rd;
}
#else
return &rtw_regdom_rd;
#endif
}
static int _rtw_regd_init_wiphy(struct rtw_regulatory *reg,
struct wiphy *wiphy,
int (*reg_notifier) (struct wiphy * wiphy,
struct regulatory_request *
request))
{
const struct ieee80211_regdomain *regd;
wiphy->reg_notifier = reg_notifier;
wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
wiphy->flags &= ~WIPHY_FLAG_STRICT_REGULATORY;
wiphy->flags &= ~WIPHY_FLAG_DISABLE_BEACON_HINTS;
regd = _rtw_regdomain_select(reg);
wiphy_apply_custom_regulatory(wiphy, regd);
/* Hard code flags */
_rtw_reg_apply_flags(wiphy);
_rtw_reg_apply_radar_flags(wiphy);
_rtw_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg);
return 0;
}
static struct country_code_to_enum_rd *_rtw_regd_find_country(u16 countrycode)
{
int i;
for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
if (allCountries[i].countrycode == countrycode)
return &allCountries[i];
}
return NULL;
}
int rtw_regd_init(_adapter * padapter,
int (*reg_notifier) (struct wiphy * wiphy,
struct regulatory_request * request))
{
//struct registry_priv *registrypriv = &padapter->registrypriv;
struct wiphy *wiphy = padapter->rtw_wdev->wiphy;
#if 0
if (rtw_regd == NULL) {
rtw_regd = (struct rtw_regulatory *)
rtw_malloc(sizeof(struct rtw_regulatory));
rtw_regd->alpha2[0] = '9';
rtw_regd->alpha2[1] = '9';
rtw_regd->country_code = COUNTRY_CODE_USER;
}
DBG_8192C("%s: Country alpha2 being used: %c%c\n",
__func__, rtw_regd->alpha2[0], rtw_regd->alpha2[1]);
#endif
_rtw_regd_init_wiphy(NULL, wiphy, reg_notifier);
return 0;
}
int rtw_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
{
struct rtw_regulatory *reg = NULL;
DBG_8192C("%s\n", __func__);
return _rtw_reg_notifier_apply(wiphy, request, reg);
}
#endif //CONFIG_IOCTL_CFG80211
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