// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2009-2012 Realtek Corporation.*/
#include "wifi.h"
#include "regd.h"
static struct country_code_to_enum_rd all_countries[] = {
{COUNTRY_CODE_FCC, "US" },
{COUNTRY_CODE_IC, "US" },
{COUNTRY_CODE_ETSI, "EC" },
{COUNTRY_CODE_SPAIN, "EC" },
{COUNTRY_CODE_FRANCE, "EC" },
{COUNTRY_CODE_MKK, "JP" },
{COUNTRY_CODE_MKK1, "JP" },
{COUNTRY_CODE_ISRAEL, "EC" },
{COUNTRY_CODE_TELEC, "JP" },
{COUNTRY_CODE_MIC, "JP" },
{COUNTRY_CODE_GLOBAL_DOMAIN, "JP" },
{COUNTRY_CODE_WORLD_WIDE_13, "EC" },
{COUNTRY_CODE_TELEC_NETGEAR, "EC" },
{COUNTRY_CODE_WORLD_WIDE_13_5G_ALL, "US" },
};
/*
* Only these channels all allow active
* scan on all world regulatory domains
*/
#define RTL819x_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
*/
#define RTL819x_2GHZ_CH12_13 \
REG_RULE(2467 -10 , 2472 +10 , 40 , 0 , 20 ,\
NL80211_RRF_PASSIVE_SCAN)
#define RTL819x_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 RTL819x_5GHZ_5150_5350 \
REG_RULE(5150 -10 , 5350 +10 , 80 , 0 , 30 , 0 )
/* 5G chan 100 - chan 165*/
#define RTL819x_5GHZ_5470_5850 \
REG_RULE(5470 -10 , 5850 +10 , 80 , 0 , 30 , 0 )
/* 5G chan 149 - chan 165*/
#define RTL819x_5GHZ_5725_5850 \
REG_RULE(5725 -10 , 5850 +10 , 80 , 0 , 30 , 0 )
#define RTL819x_5GHZ_ALL \
(RTL819x_5GHZ_5150_5350, RTL819x_5GHZ_5470_5850)
static const struct ieee80211_regdomain rtl_regdom_11 = {
.n_reg_rules = 1 ,
.alpha2 = "99" ,
.reg_rules = {
RTL819x_2GHZ_CH01_11,
}
};
static const struct ieee80211_regdomain rtl_regdom_12_13 = {
.n_reg_rules = 2 ,
.alpha2 = "99" ,
.reg_rules = {
RTL819x_2GHZ_CH01_11,
RTL819x_2GHZ_CH12_13,
}
};
static const struct ieee80211_regdomain rtl_regdom_no_midband = {
.n_reg_rules = 3 ,
.alpha2 = "99" ,
.reg_rules = {
RTL819x_2GHZ_CH01_11,
RTL819x_5GHZ_5150_5350,
RTL819x_5GHZ_5725_5850,
}
};
static const struct ieee80211_regdomain rtl_regdom_60_64 = {
.n_reg_rules = 3 ,
.alpha2 = "99" ,
.reg_rules = {
RTL819x_2GHZ_CH01_11,
RTL819x_2GHZ_CH12_13,
RTL819x_5GHZ_5725_5850,
}
};
static const struct ieee80211_regdomain rtl_regdom_14_60_64 = {
.n_reg_rules = 4 ,
.alpha2 = "99" ,
.reg_rules = {
RTL819x_2GHZ_CH01_11,
RTL819x_2GHZ_CH12_13,
RTL819x_2GHZ_CH14,
RTL819x_5GHZ_5725_5850,
}
};
static const struct ieee80211_regdomain rtl_regdom_12_13_5g_all = {
.n_reg_rules = 4 ,
.alpha2 = "99" ,
.reg_rules = {
RTL819x_2GHZ_CH01_11,
RTL819x_2GHZ_CH12_13,
RTL819x_5GHZ_5150_5350,
RTL819x_5GHZ_5470_5850,
}
};
static const struct ieee80211_regdomain rtl_regdom_14 = {
.n_reg_rules = 3 ,
.alpha2 = "99" ,
.reg_rules = {
RTL819x_2GHZ_CH01_11,
RTL819x_2GHZ_CH12_13,
RTL819x_2GHZ_CH14,
}
};
static bool _rtl_is_radar_freq(u16 center_freq)
{
return center_freq >= 5260 && center_freq <= 5700 ;
}
static void _rtl_reg_apply_beaconing_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator)
{
enum nl80211_band band;
struct ieee80211_supported_band *sband;
const struct ieee80211_reg_rule *reg_rule;
struct ieee80211_channel *ch;
unsigned int i;
for (band = 0 ; band < NUM_NL80211_BANDS; band++) {
if (!wiphy->bands[band])
continue ;
sband = wiphy->bands[band];
for (i = 0 ; i < sband->n_channels; i++) {
ch = &sband->channels[i];
if (_rtl_is_radar_freq(ch->center_freq) ||
(ch->flags & IEEE80211_CHAN_RADAR))
continue ;
if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) {
reg_rule = freq_reg_info(wiphy,
ch->center_freq);
if (IS_ERR(reg_rule))
continue ;
/*
* If 11 d 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 on Ch 12 and 13 */
static void _rtl_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;
if (!wiphy->bands[NL80211_BAND_2GHZ])
return ;
sband = wiphy->bands[NL80211_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 recieved 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 */
reg_rule = freq_reg_info(wiphy, ch->center_freq);
if (!IS_ERR(reg_rule)) {
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 */
reg_rule = freq_reg_info(wiphy, ch->center_freq);
if (!IS_ERR(reg_rule)) {
if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN))
if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN)
ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN;
}
}
/*
* Always apply Radar / DFS rules on
* freq range 5260 MHz - 5700 MHz
*/
static void _rtl_reg_apply_radar_flags(struct wiphy *wiphy)
{
struct ieee80211_supported_band *sband;
struct ieee80211_channel *ch;
unsigned int i;
if (!wiphy->bands[NL80211_BAND_5GHZ])
return ;
sband = wiphy->bands[NL80211_BAND_5GHZ];
for (i = 0 ; i < sband->n_channels; i++) {
ch = &sband->channels[i];
if (!_rtl_is_radar_freq(ch->center_freq))
continue ;
/*
* 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;
}
}
static void _rtl_reg_apply_world_flags(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator,
struct rtl_regulatory *reg)
{
_rtl_reg_apply_beaconing_flags(wiphy, initiator);
_rtl_reg_apply_active_scan_flags(wiphy, initiator);
return ;
}
static int _rtl_reg_notifier_apply(struct wiphy *wiphy,
struct regulatory_request *request,
struct rtl_regulatory *reg)
{
/* We always apply this */
_rtl_reg_apply_radar_flags(wiphy);
switch (request->initiator) {
case NL80211_REGDOM_SET_BY_DRIVER:
case NL80211_REGDOM_SET_BY_CORE:
case NL80211_REGDOM_SET_BY_USER:
break ;
case NL80211_REGDOM_SET_BY_COUNTRY_IE:
_rtl_reg_apply_world_flags(wiphy, request->initiator, reg);
break ;
}
return 0 ;
}
static const struct ieee80211_regdomain *_rtl_regdomain_select(
struct rtl_regulatory *reg)
{
switch (reg->country_code) {
case COUNTRY_CODE_FCC:
return &rtl_regdom_no_midband;
case COUNTRY_CODE_IC:
return &rtl_regdom_11;
case COUNTRY_CODE_TELEC_NETGEAR:
return &rtl_regdom_60_64;
case COUNTRY_CODE_ETSI:
case COUNTRY_CODE_SPAIN:
case COUNTRY_CODE_FRANCE:
case COUNTRY_CODE_ISRAEL:
return &rtl_regdom_12_13;
case COUNTRY_CODE_MKK:
case COUNTRY_CODE_MKK1:
case COUNTRY_CODE_TELEC:
case COUNTRY_CODE_MIC:
return &rtl_regdom_14_60_64;
case COUNTRY_CODE_GLOBAL_DOMAIN:
return &rtl_regdom_14;
case COUNTRY_CODE_WORLD_WIDE_13:
case COUNTRY_CODE_WORLD_WIDE_13_5G_ALL:
return &rtl_regdom_12_13_5g_all;
default :
return &rtl_regdom_no_midband;
}
}
static int _rtl_regd_init_wiphy(struct rtl_regulatory *reg,
struct wiphy *wiphy,
void (*reg_notifier)(struct wiphy *wiphy,
struct regulatory_request *
request))
{
const struct ieee80211_regdomain *regd;
wiphy->reg_notifier = reg_notifier;
wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG;
wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG;
wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS;
regd = _rtl_regdomain_select(reg);
wiphy_apply_custom_regulatory(wiphy, regd);
_rtl_reg_apply_radar_flags(wiphy);
_rtl_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg);
return 0 ;
}
static struct country_code_to_enum_rd *_rtl_regd_find_country(u16 countrycode)
{
int i;
for (i = 0 ; i < ARRAY_SIZE(all_countries); i++) {
if (all_countries[i].countrycode == countrycode)
return &all_countries[i];
}
return NULL;
}
static u8 channel_plan_to_country_code(u8 channelplan)
{
switch (channelplan) {
case 0 x20:
case 0 x21:
return COUNTRY_CODE_WORLD_WIDE_13;
case 0 x22:
return COUNTRY_CODE_IC;
case 0 x25:
return COUNTRY_CODE_ETSI;
case 0 x32:
return COUNTRY_CODE_TELEC_NETGEAR;
case 0 x41:
return COUNTRY_CODE_GLOBAL_DOMAIN;
case 0 x7f:
return COUNTRY_CODE_WORLD_WIDE_13_5G_ALL;
default :
return COUNTRY_CODE_MAX; /*Error*/
}
}
int rtl_regd_init(struct ieee80211_hw *hw,
void (*reg_notifier)(struct wiphy *wiphy,
struct regulatory_request *request))
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct wiphy *wiphy = hw->wiphy;
struct country_code_to_enum_rd *country = NULL;
if (!wiphy)
return -EINVAL;
/* init country_code from efuse channel plan */
rtlpriv->regd.country_code =
channel_plan_to_country_code(rtlpriv->efuse.channel_plan);
rtl_dbg(rtlpriv, COMP_REGD, DBG_DMESG,
"rtl: EEPROM regdomain: 0x%0x country code: %d\n" ,
rtlpriv->efuse.channel_plan, rtlpriv->regd.country_code);
if (rtlpriv->regd.country_code >= COUNTRY_CODE_MAX) {
rtl_dbg(rtlpriv, COMP_REGD, DBG_DMESG,
"rtl: EEPROM indicates invalid country code, world wide 13 should be used\n" );
rtlpriv->regd.country_code = COUNTRY_CODE_WORLD_WIDE_13;
}
country = _rtl_regd_find_country(rtlpriv->regd.country_code);
if (country) {
rtlpriv->regd.alpha2[0 ] = country->iso_name[0 ];
rtlpriv->regd.alpha2[1 ] = country->iso_name[1 ];
} else {
rtlpriv->regd.alpha2[0 ] = '0' ;
rtlpriv->regd.alpha2[1 ] = '0' ;
}
rtl_dbg(rtlpriv, COMP_REGD, DBG_TRACE,
"rtl: Country alpha2 being used: %c%c\n" ,
rtlpriv->regd.alpha2[0 ], rtlpriv->regd.alpha2[1 ]);
_rtl_regd_init_wiphy(&rtlpriv->regd, wiphy, reg_notifier);
return 0 ;
}
void rtl_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request)
{
struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
struct rtl_priv *rtlpriv = rtl_priv(hw);
rtl_dbg(rtlpriv, COMP_REGD, DBG_LOUD, "\n" );
_rtl_reg_notifier_apply(wiphy, request, &rtlpriv->regd);
}
Messung V0.5 in Prozent C=96 H=96 G=95
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(vorverarbeitet am 2026-10-03)
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