435 lines
11 KiB
C
435 lines
11 KiB
C
// 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 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 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 0x20:
|
|
case 0x21:
|
|
return COUNTRY_CODE_WORLD_WIDE_13;
|
|
case 0x22:
|
|
return COUNTRY_CODE_IC;
|
|
case 0x25:
|
|
return COUNTRY_CODE_ETSI;
|
|
case 0x32:
|
|
return COUNTRY_CODE_TELEC_NETGEAR;
|
|
case 0x41:
|
|
return COUNTRY_CODE_GLOBAL_DOMAIN;
|
|
case 0x7f:
|
|
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);
|
|
}
|