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434 lines
11 KiB
434 lines
11 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* Copyright(c) 2009-2012 Realtek Corporation.*/ |
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#include "wifi.h" |
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#include "regd.h" |
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static struct country_code_to_enum_rd all_countries[] = { |
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{COUNTRY_CODE_FCC, "US"}, |
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{COUNTRY_CODE_IC, "US"}, |
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{COUNTRY_CODE_ETSI, "EC"}, |
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{COUNTRY_CODE_SPAIN, "EC"}, |
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{COUNTRY_CODE_FRANCE, "EC"}, |
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{COUNTRY_CODE_MKK, "JP"}, |
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{COUNTRY_CODE_MKK1, "JP"}, |
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{COUNTRY_CODE_ISRAEL, "EC"}, |
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{COUNTRY_CODE_TELEC, "JP"}, |
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{COUNTRY_CODE_MIC, "JP"}, |
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{COUNTRY_CODE_GLOBAL_DOMAIN, "JP"}, |
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{COUNTRY_CODE_WORLD_WIDE_13, "EC"}, |
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{COUNTRY_CODE_TELEC_NETGEAR, "EC"}, |
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{COUNTRY_CODE_WORLD_WIDE_13_5G_ALL, "US"}, |
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}; |
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/* |
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*Only these channels all allow active |
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*scan on all world regulatory domains |
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*/ |
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#define RTL819x_2GHZ_CH01_11 \ |
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REG_RULE(2412-10, 2462+10, 40, 0, 20, 0) |
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/* |
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*We enable active scan on these a case |
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*by case basis by regulatory domain |
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*/ |
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#define RTL819x_2GHZ_CH12_13 \ |
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REG_RULE(2467-10, 2472+10, 40, 0, 20,\ |
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NL80211_RRF_PASSIVE_SCAN) |
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#define RTL819x_2GHZ_CH14 \ |
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REG_RULE(2484-10, 2484+10, 40, 0, 20, \ |
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NL80211_RRF_PASSIVE_SCAN | \ |
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NL80211_RRF_NO_OFDM) |
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/* 5G chan 36 - chan 64*/ |
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#define RTL819x_5GHZ_5150_5350 \ |
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REG_RULE(5150-10, 5350+10, 80, 0, 30, 0) |
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/* 5G chan 100 - chan 165*/ |
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#define RTL819x_5GHZ_5470_5850 \ |
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REG_RULE(5470-10, 5850+10, 80, 0, 30, 0) |
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/* 5G chan 149 - chan 165*/ |
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#define RTL819x_5GHZ_5725_5850 \ |
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REG_RULE(5725-10, 5850+10, 80, 0, 30, 0) |
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#define RTL819x_5GHZ_ALL \ |
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(RTL819x_5GHZ_5150_5350, RTL819x_5GHZ_5470_5850) |
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static const struct ieee80211_regdomain rtl_regdom_11 = { |
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.n_reg_rules = 1, |
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.alpha2 = "99", |
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.reg_rules = { |
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RTL819x_2GHZ_CH01_11, |
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} |
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}; |
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static const struct ieee80211_regdomain rtl_regdom_12_13 = { |
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.n_reg_rules = 2, |
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.alpha2 = "99", |
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.reg_rules = { |
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RTL819x_2GHZ_CH01_11, |
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RTL819x_2GHZ_CH12_13, |
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} |
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}; |
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static const struct ieee80211_regdomain rtl_regdom_no_midband = { |
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.n_reg_rules = 3, |
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.alpha2 = "99", |
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.reg_rules = { |
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RTL819x_2GHZ_CH01_11, |
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RTL819x_5GHZ_5150_5350, |
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RTL819x_5GHZ_5725_5850, |
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} |
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}; |
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static const struct ieee80211_regdomain rtl_regdom_60_64 = { |
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.n_reg_rules = 3, |
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.alpha2 = "99", |
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.reg_rules = { |
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RTL819x_2GHZ_CH01_11, |
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RTL819x_2GHZ_CH12_13, |
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RTL819x_5GHZ_5725_5850, |
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} |
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}; |
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static const struct ieee80211_regdomain rtl_regdom_14_60_64 = { |
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.n_reg_rules = 4, |
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.alpha2 = "99", |
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.reg_rules = { |
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RTL819x_2GHZ_CH01_11, |
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RTL819x_2GHZ_CH12_13, |
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RTL819x_2GHZ_CH14, |
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RTL819x_5GHZ_5725_5850, |
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} |
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}; |
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static const struct ieee80211_regdomain rtl_regdom_12_13_5g_all = { |
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.n_reg_rules = 4, |
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.alpha2 = "99", |
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.reg_rules = { |
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RTL819x_2GHZ_CH01_11, |
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RTL819x_2GHZ_CH12_13, |
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RTL819x_5GHZ_5150_5350, |
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RTL819x_5GHZ_5470_5850, |
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} |
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}; |
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static const struct ieee80211_regdomain rtl_regdom_14 = { |
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.n_reg_rules = 3, |
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.alpha2 = "99", |
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.reg_rules = { |
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RTL819x_2GHZ_CH01_11, |
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RTL819x_2GHZ_CH12_13, |
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RTL819x_2GHZ_CH14, |
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} |
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}; |
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static bool _rtl_is_radar_freq(u16 center_freq) |
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{ |
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return center_freq >= 5260 && center_freq <= 5700; |
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} |
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static void _rtl_reg_apply_beaconing_flags(struct wiphy *wiphy, |
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enum nl80211_reg_initiator initiator) |
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{ |
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enum nl80211_band band; |
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struct ieee80211_supported_band *sband; |
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const struct ieee80211_reg_rule *reg_rule; |
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struct ieee80211_channel *ch; |
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unsigned int i; |
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for (band = 0; band < NUM_NL80211_BANDS; band++) { |
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if (!wiphy->bands[band]) |
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continue; |
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sband = wiphy->bands[band]; |
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for (i = 0; i < sband->n_channels; i++) { |
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ch = &sband->channels[i]; |
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if (_rtl_is_radar_freq(ch->center_freq) || |
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(ch->flags & IEEE80211_CHAN_RADAR)) |
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continue; |
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if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
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reg_rule = freq_reg_info(wiphy, |
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ch->center_freq); |
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if (IS_ERR(reg_rule)) |
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continue; |
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/* |
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*If 11d had a rule for this channel ensure |
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*we enable adhoc/beaconing if it allows us to |
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*use it. Note that we would have disabled it |
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*by applying our static world regdomain by |
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*default during init, prior to calling our |
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*regulatory_hint(). |
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*/ |
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if (!(reg_rule->flags & NL80211_RRF_NO_IBSS)) |
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ch->flags &= ~IEEE80211_CHAN_NO_IBSS; |
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if (!(reg_rule->flags & |
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NL80211_RRF_PASSIVE_SCAN)) |
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ch->flags &= |
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~IEEE80211_CHAN_PASSIVE_SCAN; |
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} else { |
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if (ch->beacon_found) |
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ch->flags &= ~(IEEE80211_CHAN_NO_IBSS | |
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IEEE80211_CHAN_PASSIVE_SCAN); |
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} |
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} |
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} |
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} |
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/* Allows active scan scan on Ch 12 and 13 */ |
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static void _rtl_reg_apply_active_scan_flags(struct wiphy *wiphy, |
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enum nl80211_reg_initiator |
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initiator) |
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{ |
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struct ieee80211_supported_band *sband; |
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struct ieee80211_channel *ch; |
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const struct ieee80211_reg_rule *reg_rule; |
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if (!wiphy->bands[NL80211_BAND_2GHZ]) |
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return; |
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sband = wiphy->bands[NL80211_BAND_2GHZ]; |
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/* |
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*If no country IE has been received always enable active scan |
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*on these channels. This is only done for specific regulatory SKUs |
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*/ |
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if (initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE) { |
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ch = &sband->channels[11]; /* CH 12 */ |
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if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
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ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; |
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ch = &sband->channels[12]; /* CH 13 */ |
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if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
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ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; |
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return; |
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} |
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/* |
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*If a country IE has been recieved check its rule for this |
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*channel first before enabling active scan. The passive scan |
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*would have been enforced by the initial processing of our |
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*custom regulatory domain. |
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*/ |
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ch = &sband->channels[11]; /* CH 12 */ |
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reg_rule = freq_reg_info(wiphy, ch->center_freq); |
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if (!IS_ERR(reg_rule)) { |
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if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) |
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if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
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ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; |
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} |
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ch = &sband->channels[12]; /* CH 13 */ |
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reg_rule = freq_reg_info(wiphy, ch->center_freq); |
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if (!IS_ERR(reg_rule)) { |
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if (!(reg_rule->flags & NL80211_RRF_PASSIVE_SCAN)) |
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if (ch->flags & IEEE80211_CHAN_PASSIVE_SCAN) |
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ch->flags &= ~IEEE80211_CHAN_PASSIVE_SCAN; |
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} |
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} |
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/* |
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*Always apply Radar/DFS rules on |
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*freq range 5260 MHz - 5700 MHz |
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*/ |
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static void _rtl_reg_apply_radar_flags(struct wiphy *wiphy) |
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{ |
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struct ieee80211_supported_band *sband; |
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struct ieee80211_channel *ch; |
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unsigned int i; |
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if (!wiphy->bands[NL80211_BAND_5GHZ]) |
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return; |
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sband = wiphy->bands[NL80211_BAND_5GHZ]; |
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for (i = 0; i < sband->n_channels; i++) { |
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ch = &sband->channels[i]; |
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if (!_rtl_is_radar_freq(ch->center_freq)) |
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continue; |
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/* |
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*We always enable radar detection/DFS on this |
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*frequency range. Additionally we also apply on |
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*this frequency range: |
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*- If STA mode does not yet have DFS supports disable |
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* active scanning |
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*- If adhoc mode does not support DFS yet then disable |
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* adhoc in the frequency. |
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*- If AP mode does not yet support radar detection/DFS |
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*do not allow AP mode |
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*/ |
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if (!(ch->flags & IEEE80211_CHAN_DISABLED)) |
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ch->flags |= IEEE80211_CHAN_RADAR | |
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IEEE80211_CHAN_NO_IBSS | |
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IEEE80211_CHAN_PASSIVE_SCAN; |
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} |
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} |
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static void _rtl_reg_apply_world_flags(struct wiphy *wiphy, |
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enum nl80211_reg_initiator initiator, |
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struct rtl_regulatory *reg) |
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{ |
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_rtl_reg_apply_beaconing_flags(wiphy, initiator); |
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_rtl_reg_apply_active_scan_flags(wiphy, initiator); |
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return; |
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} |
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static int _rtl_reg_notifier_apply(struct wiphy *wiphy, |
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struct regulatory_request *request, |
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struct rtl_regulatory *reg) |
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{ |
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/* We always apply this */ |
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_rtl_reg_apply_radar_flags(wiphy); |
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switch (request->initiator) { |
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case NL80211_REGDOM_SET_BY_DRIVER: |
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case NL80211_REGDOM_SET_BY_CORE: |
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case NL80211_REGDOM_SET_BY_USER: |
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break; |
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case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
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_rtl_reg_apply_world_flags(wiphy, request->initiator, reg); |
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break; |
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} |
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return 0; |
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} |
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static const struct ieee80211_regdomain *_rtl_regdomain_select( |
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struct rtl_regulatory *reg) |
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{ |
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switch (reg->country_code) { |
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case COUNTRY_CODE_FCC: |
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return &rtl_regdom_no_midband; |
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case COUNTRY_CODE_IC: |
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return &rtl_regdom_11; |
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case COUNTRY_CODE_TELEC_NETGEAR: |
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return &rtl_regdom_60_64; |
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case COUNTRY_CODE_ETSI: |
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case COUNTRY_CODE_SPAIN: |
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case COUNTRY_CODE_FRANCE: |
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case COUNTRY_CODE_ISRAEL: |
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return &rtl_regdom_12_13; |
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case COUNTRY_CODE_MKK: |
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case COUNTRY_CODE_MKK1: |
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case COUNTRY_CODE_TELEC: |
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case COUNTRY_CODE_MIC: |
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return &rtl_regdom_14_60_64; |
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case COUNTRY_CODE_GLOBAL_DOMAIN: |
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return &rtl_regdom_14; |
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case COUNTRY_CODE_WORLD_WIDE_13: |
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case COUNTRY_CODE_WORLD_WIDE_13_5G_ALL: |
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return &rtl_regdom_12_13_5g_all; |
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default: |
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return &rtl_regdom_no_midband; |
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} |
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} |
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static int _rtl_regd_init_wiphy(struct rtl_regulatory *reg, |
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struct wiphy *wiphy, |
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void (*reg_notifier)(struct wiphy *wiphy, |
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struct regulatory_request * |
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request)) |
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{ |
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const struct ieee80211_regdomain *regd; |
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wiphy->reg_notifier = reg_notifier; |
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wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; |
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wiphy->regulatory_flags &= ~REGULATORY_STRICT_REG; |
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wiphy->regulatory_flags &= ~REGULATORY_DISABLE_BEACON_HINTS; |
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regd = _rtl_regdomain_select(reg); |
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wiphy_apply_custom_regulatory(wiphy, regd); |
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_rtl_reg_apply_radar_flags(wiphy); |
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_rtl_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); |
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return 0; |
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} |
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static struct country_code_to_enum_rd *_rtl_regd_find_country(u16 countrycode) |
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{ |
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int i; |
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for (i = 0; i < ARRAY_SIZE(all_countries); i++) { |
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if (all_countries[i].countrycode == countrycode) |
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return &all_countries[i]; |
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} |
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return NULL; |
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} |
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static u8 channel_plan_to_country_code(u8 channelplan) |
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{ |
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switch (channelplan) { |
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case 0x20: |
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case 0x21: |
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return COUNTRY_CODE_WORLD_WIDE_13; |
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case 0x22: |
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return COUNTRY_CODE_IC; |
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case 0x25: |
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return COUNTRY_CODE_ETSI; |
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case 0x32: |
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return COUNTRY_CODE_TELEC_NETGEAR; |
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case 0x41: |
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return COUNTRY_CODE_GLOBAL_DOMAIN; |
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case 0x7f: |
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return COUNTRY_CODE_WORLD_WIDE_13_5G_ALL; |
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default: |
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return COUNTRY_CODE_MAX; /*Error*/ |
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} |
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} |
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int rtl_regd_init(struct ieee80211_hw *hw, |
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void (*reg_notifier)(struct wiphy *wiphy, |
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struct regulatory_request *request)) |
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{ |
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struct rtl_priv *rtlpriv = rtl_priv(hw); |
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struct wiphy *wiphy = hw->wiphy; |
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struct country_code_to_enum_rd *country = NULL; |
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if (!wiphy) |
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return -EINVAL; |
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/* init country_code from efuse channel plan */ |
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rtlpriv->regd.country_code = |
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channel_plan_to_country_code(rtlpriv->efuse.channel_plan); |
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rtl_dbg(rtlpriv, COMP_REGD, DBG_DMESG, |
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"rtl: EEPROM regdomain: 0x%0x country code: %d\n", |
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rtlpriv->efuse.channel_plan, rtlpriv->regd.country_code); |
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if (rtlpriv->regd.country_code >= COUNTRY_CODE_MAX) { |
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rtl_dbg(rtlpriv, COMP_REGD, DBG_DMESG, |
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"rtl: EEPROM indicates invalid country code, world wide 13 should be used\n"); |
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rtlpriv->regd.country_code = COUNTRY_CODE_WORLD_WIDE_13; |
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} |
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country = _rtl_regd_find_country(rtlpriv->regd.country_code); |
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if (country) { |
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rtlpriv->regd.alpha2[0] = country->iso_name[0]; |
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rtlpriv->regd.alpha2[1] = country->iso_name[1]; |
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} else { |
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rtlpriv->regd.alpha2[0] = '0'; |
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rtlpriv->regd.alpha2[1] = '0'; |
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} |
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rtl_dbg(rtlpriv, COMP_REGD, DBG_TRACE, |
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"rtl: Country alpha2 being used: %c%c\n", |
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rtlpriv->regd.alpha2[0], rtlpriv->regd.alpha2[1]); |
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_rtl_regd_init_wiphy(&rtlpriv->regd, wiphy, reg_notifier); |
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return 0; |
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} |
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void rtl_reg_notifier(struct wiphy *wiphy, struct regulatory_request *request) |
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{ |
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struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); |
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struct rtl_priv *rtlpriv = rtl_priv(hw); |
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rtl_dbg(rtlpriv, COMP_REGD, DBG_LOUD, "\n"); |
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_rtl_reg_notifier_apply(wiphy, request, &rtlpriv->regd); |
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}
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