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812 lines
20 KiB
812 lines
20 KiB
/* |
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* Copyright (c) 2008-2009 Atheros Communications Inc. |
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* |
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* Permission to use, copy, modify, and/or distribute this software for any |
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* purpose with or without fee is hereby granted, provided that the above |
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* copyright notice and this permission notice appear in all copies. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
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*/ |
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|
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
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|
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#include <linux/kernel.h> |
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#include <linux/export.h> |
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#include <net/cfg80211.h> |
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#include <net/mac80211.h> |
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#include "regd.h" |
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#include "regd_common.h" |
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static int __ath_regd_init(struct ath_regulatory *reg); |
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|
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/* |
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* This is a set of common rules used by our world regulatory domains. |
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* We have 12 world regulatory domains. To save space we consolidate |
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* the regulatory domains in 5 structures by frequency and change |
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* the flags on our reg_notifier() on a case by case basis. |
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*/ |
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|
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/* Only these channels all allow active scan on all world regulatory domains */ |
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#define ATH_2GHZ_CH01_11 REG_RULE(2412-10, 2462+10, 40, 0, 20, 0) |
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/* We enable active scan on these a case by case basis by regulatory domain */ |
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#define ATH_2GHZ_CH12_13 REG_RULE(2467-10, 2472+10, 40, 0, 20,\ |
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NL80211_RRF_NO_IR) |
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#define ATH_2GHZ_CH14 REG_RULE(2484-10, 2484+10, 40, 0, 20,\ |
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NL80211_RRF_NO_IR | \ |
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NL80211_RRF_NO_OFDM) |
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|
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/* We allow IBSS on these on a case by case basis by regulatory domain */ |
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#define ATH_5GHZ_5150_5350 REG_RULE(5150-10, 5350+10, 80, 0, 30,\ |
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NL80211_RRF_NO_IR) |
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#define ATH_5GHZ_5470_5850 REG_RULE(5470-10, 5850+10, 80, 0, 30,\ |
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NL80211_RRF_NO_IR) |
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#define ATH_5GHZ_5725_5850 REG_RULE(5725-10, 5850+10, 80, 0, 30,\ |
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NL80211_RRF_NO_IR) |
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#define ATH_2GHZ_ALL ATH_2GHZ_CH01_11, \ |
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ATH_2GHZ_CH12_13, \ |
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ATH_2GHZ_CH14 |
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|
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#define ATH_5GHZ_ALL ATH_5GHZ_5150_5350, \ |
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ATH_5GHZ_5470_5850 |
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|
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/* This one skips what we call "mid band" */ |
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#define ATH_5GHZ_NO_MIDBAND ATH_5GHZ_5150_5350, \ |
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ATH_5GHZ_5725_5850 |
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|
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/* Can be used for: |
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* 0x60, 0x61, 0x62 */ |
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static const struct ieee80211_regdomain ath_world_regdom_60_61_62 = { |
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.n_reg_rules = 5, |
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.alpha2 = "99", |
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.reg_rules = { |
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ATH_2GHZ_ALL, |
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ATH_5GHZ_ALL, |
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} |
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}; |
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/* Can be used by 0x63 and 0x65 */ |
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static const struct ieee80211_regdomain ath_world_regdom_63_65 = { |
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.n_reg_rules = 4, |
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.alpha2 = "99", |
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.reg_rules = { |
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ATH_2GHZ_CH01_11, |
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ATH_2GHZ_CH12_13, |
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ATH_5GHZ_NO_MIDBAND, |
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} |
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}; |
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/* Can be used by 0x64 only */ |
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static const struct ieee80211_regdomain ath_world_regdom_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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ATH_2GHZ_CH01_11, |
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ATH_5GHZ_NO_MIDBAND, |
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} |
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}; |
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/* Can be used by 0x66 and 0x69 */ |
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static const struct ieee80211_regdomain ath_world_regdom_66_69 = { |
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.n_reg_rules = 3, |
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.alpha2 = "99", |
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.reg_rules = { |
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ATH_2GHZ_CH01_11, |
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ATH_5GHZ_ALL, |
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} |
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}; |
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/* Can be used by 0x67, 0x68, 0x6A and 0x6C */ |
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static const struct ieee80211_regdomain ath_world_regdom_67_68_6A_6C = { |
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.n_reg_rules = 4, |
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.alpha2 = "99", |
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.reg_rules = { |
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ATH_2GHZ_CH01_11, |
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ATH_2GHZ_CH12_13, |
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ATH_5GHZ_ALL, |
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} |
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}; |
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static bool dynamic_country_user_possible(struct ath_regulatory *reg) |
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{ |
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if (IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_CERT_TESTING)) |
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return true; |
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switch (reg->country_code) { |
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case CTRY_UNITED_STATES: |
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case CTRY_JAPAN1: |
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case CTRY_JAPAN2: |
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case CTRY_JAPAN3: |
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case CTRY_JAPAN4: |
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case CTRY_JAPAN5: |
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case CTRY_JAPAN6: |
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case CTRY_JAPAN7: |
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case CTRY_JAPAN8: |
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case CTRY_JAPAN9: |
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case CTRY_JAPAN10: |
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case CTRY_JAPAN11: |
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case CTRY_JAPAN12: |
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case CTRY_JAPAN13: |
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case CTRY_JAPAN14: |
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case CTRY_JAPAN15: |
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case CTRY_JAPAN16: |
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case CTRY_JAPAN17: |
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case CTRY_JAPAN18: |
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case CTRY_JAPAN19: |
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case CTRY_JAPAN20: |
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case CTRY_JAPAN21: |
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case CTRY_JAPAN22: |
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case CTRY_JAPAN23: |
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case CTRY_JAPAN24: |
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case CTRY_JAPAN25: |
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case CTRY_JAPAN26: |
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case CTRY_JAPAN27: |
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case CTRY_JAPAN28: |
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case CTRY_JAPAN29: |
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case CTRY_JAPAN30: |
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case CTRY_JAPAN31: |
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case CTRY_JAPAN32: |
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case CTRY_JAPAN33: |
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case CTRY_JAPAN34: |
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case CTRY_JAPAN35: |
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case CTRY_JAPAN36: |
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case CTRY_JAPAN37: |
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case CTRY_JAPAN38: |
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case CTRY_JAPAN39: |
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case CTRY_JAPAN40: |
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case CTRY_JAPAN41: |
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case CTRY_JAPAN42: |
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case CTRY_JAPAN43: |
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case CTRY_JAPAN44: |
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case CTRY_JAPAN45: |
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case CTRY_JAPAN46: |
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case CTRY_JAPAN47: |
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case CTRY_JAPAN48: |
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case CTRY_JAPAN49: |
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case CTRY_JAPAN50: |
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case CTRY_JAPAN51: |
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case CTRY_JAPAN52: |
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case CTRY_JAPAN53: |
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case CTRY_JAPAN54: |
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case CTRY_JAPAN55: |
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case CTRY_JAPAN56: |
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case CTRY_JAPAN57: |
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case CTRY_JAPAN58: |
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case CTRY_JAPAN59: |
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return false; |
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} |
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return true; |
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} |
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static bool ath_reg_dyn_country_user_allow(struct ath_regulatory *reg) |
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{ |
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if (!IS_ENABLED(CONFIG_ATH_REG_DYNAMIC_USER_REG_HINTS)) |
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return false; |
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if (!dynamic_country_user_possible(reg)) |
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return false; |
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return true; |
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} |
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static inline bool is_wwr_sku(u16 regd) |
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{ |
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return ((regd & COUNTRY_ERD_FLAG) != COUNTRY_ERD_FLAG) && |
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(((regd & WORLD_SKU_MASK) == WORLD_SKU_PREFIX) || |
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(regd == WORLD)); |
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} |
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static u16 ath_regd_get_eepromRD(struct ath_regulatory *reg) |
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{ |
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return reg->current_rd & ~WORLDWIDE_ROAMING_FLAG; |
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} |
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bool ath_is_world_regd(struct ath_regulatory *reg) |
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{ |
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return is_wwr_sku(ath_regd_get_eepromRD(reg)); |
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} |
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EXPORT_SYMBOL(ath_is_world_regd); |
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static const struct ieee80211_regdomain *ath_default_world_regdomain(void) |
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{ |
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/* this is the most restrictive */ |
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return &ath_world_regdom_64; |
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} |
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static const struct |
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ieee80211_regdomain *ath_world_regdomain(struct ath_regulatory *reg) |
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{ |
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switch (reg->regpair->reg_domain) { |
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case 0x60: |
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case 0x61: |
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case 0x62: |
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return &ath_world_regdom_60_61_62; |
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case 0x63: |
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case 0x65: |
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return &ath_world_regdom_63_65; |
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case 0x64: |
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return &ath_world_regdom_64; |
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case 0x66: |
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case 0x69: |
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return &ath_world_regdom_66_69; |
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case 0x67: |
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case 0x68: |
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case 0x6A: |
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case 0x6C: |
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return &ath_world_regdom_67_68_6A_6C; |
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default: |
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WARN_ON(1); |
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return ath_default_world_regdomain(); |
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} |
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} |
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bool ath_is_49ghz_allowed(u16 regdomain) |
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{ |
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/* possibly more */ |
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return regdomain == MKK9_MKKC; |
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} |
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EXPORT_SYMBOL(ath_is_49ghz_allowed); |
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/* Frequency is one where radar detection is required */ |
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static bool ath_is_radar_freq(u16 center_freq, |
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struct ath_regulatory *reg) |
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{ |
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if (reg->country_code == CTRY_INDIA) |
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return (center_freq >= 5500 && center_freq <= 5700); |
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return (center_freq >= 5260 && center_freq <= 5700); |
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} |
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static void ath_force_clear_no_ir_chan(struct wiphy *wiphy, |
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struct ieee80211_channel *ch) |
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{ |
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const struct ieee80211_reg_rule *reg_rule; |
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reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(ch->center_freq)); |
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if (IS_ERR(reg_rule)) |
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return; |
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if (!(reg_rule->flags & NL80211_RRF_NO_IR)) |
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if (ch->flags & IEEE80211_CHAN_NO_IR) |
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ch->flags &= ~IEEE80211_CHAN_NO_IR; |
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} |
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static void ath_force_clear_no_ir_freq(struct wiphy *wiphy, u16 center_freq) |
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{ |
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struct ieee80211_channel *ch; |
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ch = ieee80211_get_channel(wiphy, center_freq); |
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if (!ch) |
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return; |
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ath_force_clear_no_ir_chan(wiphy, ch); |
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} |
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static void ath_force_no_ir_chan(struct ieee80211_channel *ch) |
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{ |
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ch->flags |= IEEE80211_CHAN_NO_IR; |
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} |
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static void ath_force_no_ir_freq(struct wiphy *wiphy, u16 center_freq) |
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{ |
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struct ieee80211_channel *ch; |
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ch = ieee80211_get_channel(wiphy, center_freq); |
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if (!ch) |
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return; |
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ath_force_no_ir_chan(ch); |
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} |
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static void |
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__ath_reg_apply_beaconing_flags(struct wiphy *wiphy, |
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struct ath_regulatory *reg, |
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enum nl80211_reg_initiator initiator, |
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struct ieee80211_channel *ch) |
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{ |
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if (ath_is_radar_freq(ch->center_freq, reg) || |
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(ch->flags & IEEE80211_CHAN_RADAR)) |
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return; |
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switch (initiator) { |
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case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
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ath_force_clear_no_ir_chan(wiphy, ch); |
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break; |
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case NL80211_REGDOM_SET_BY_USER: |
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if (ath_reg_dyn_country_user_allow(reg)) |
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ath_force_clear_no_ir_chan(wiphy, ch); |
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break; |
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default: |
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if (ch->beacon_found) |
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ch->flags &= ~IEEE80211_CHAN_NO_IR; |
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} |
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} |
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/* |
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* These exception rules do not apply radar frequencies. |
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* |
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* - We enable initiating radiation if the country IE says its fine: |
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* - If no country IE has been processed and a we determine we have |
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* received a beacon on a channel we can enable initiating radiation. |
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*/ |
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static void |
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ath_reg_apply_beaconing_flags(struct wiphy *wiphy, |
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struct ath_regulatory *reg, |
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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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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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__ath_reg_apply_beaconing_flags(wiphy, reg, |
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initiator, ch); |
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} |
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} |
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} |
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/** |
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* ath_reg_apply_ir_flags() |
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* @wiphy: the wiphy to use |
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* @reg: regulatory structure - used for country selection |
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* @initiator: the regulatory hint initiator |
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* |
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* If no country IE has been received always enable passive scan |
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* and no-ibss on these channels. This is only done for specific |
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* regulatory SKUs. |
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* |
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* If a country IE has been received 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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static void |
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ath_reg_apply_ir_flags(struct wiphy *wiphy, |
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struct ath_regulatory *reg, |
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enum nl80211_reg_initiator initiator) |
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{ |
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struct ieee80211_supported_band *sband; |
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sband = wiphy->bands[NL80211_BAND_2GHZ]; |
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if (!sband) |
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return; |
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switch(initiator) { |
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case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
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ath_force_clear_no_ir_freq(wiphy, 2467); |
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ath_force_clear_no_ir_freq(wiphy, 2472); |
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break; |
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case NL80211_REGDOM_SET_BY_USER: |
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if (!ath_reg_dyn_country_user_allow(reg)) |
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break; |
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ath_force_clear_no_ir_freq(wiphy, 2467); |
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ath_force_clear_no_ir_freq(wiphy, 2472); |
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break; |
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default: |
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ath_force_no_ir_freq(wiphy, 2467); |
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ath_force_no_ir_freq(wiphy, 2472); |
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} |
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} |
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/* Always apply Radar/DFS rules on freq range 5500 MHz - 5700 MHz */ |
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static void ath_reg_apply_radar_flags(struct wiphy *wiphy, |
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struct ath_regulatory *reg) |
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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 (!ath_is_radar_freq(ch->center_freq, reg)) |
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continue; |
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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 |
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* disable 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_IR; |
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} |
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} |
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static void ath_reg_apply_world_flags(struct wiphy *wiphy, |
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enum nl80211_reg_initiator initiator, |
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struct ath_regulatory *reg) |
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{ |
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switch (reg->regpair->reg_domain) { |
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case 0x60: |
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case 0x63: |
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case 0x66: |
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case 0x67: |
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case 0x6C: |
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ath_reg_apply_beaconing_flags(wiphy, reg, initiator); |
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break; |
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case 0x68: |
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ath_reg_apply_beaconing_flags(wiphy, reg, initiator); |
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ath_reg_apply_ir_flags(wiphy, reg, initiator); |
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break; |
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default: |
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if (ath_reg_dyn_country_user_allow(reg)) |
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ath_reg_apply_beaconing_flags(wiphy, reg, initiator); |
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} |
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} |
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u16 ath_regd_find_country_by_name(char *alpha2) |
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{ |
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unsigned int i; |
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|
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for (i = 0; i < ARRAY_SIZE(allCountries); i++) { |
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if (!memcmp(allCountries[i].isoName, alpha2, 2)) |
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return allCountries[i].countryCode; |
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} |
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|
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return -1; |
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} |
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EXPORT_SYMBOL(ath_regd_find_country_by_name); |
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|
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static int __ath_reg_dyn_country(struct wiphy *wiphy, |
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struct ath_regulatory *reg, |
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struct regulatory_request *request) |
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{ |
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u16 country_code; |
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|
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if (request->initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE && |
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!ath_is_world_regd(reg)) |
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return -EINVAL; |
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|
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country_code = ath_regd_find_country_by_name(request->alpha2); |
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if (country_code == (u16) -1) |
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return -EINVAL; |
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|
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reg->current_rd = COUNTRY_ERD_FLAG; |
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reg->current_rd |= country_code; |
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|
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__ath_regd_init(reg); |
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|
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ath_reg_apply_world_flags(wiphy, request->initiator, reg); |
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|
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return 0; |
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} |
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|
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static void ath_reg_dyn_country(struct wiphy *wiphy, |
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struct ath_regulatory *reg, |
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struct regulatory_request *request) |
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{ |
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if (__ath_reg_dyn_country(wiphy, reg, request)) |
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return; |
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|
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printk(KERN_DEBUG "ath: regdomain 0x%0x " |
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"dynamically updated by %s\n", |
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reg->current_rd, |
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reg_initiator_name(request->initiator)); |
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} |
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|
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void ath_reg_notifier_apply(struct wiphy *wiphy, |
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struct regulatory_request *request, |
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struct ath_regulatory *reg) |
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{ |
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struct ath_common *common = container_of(reg, struct ath_common, |
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regulatory); |
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/* We always apply this */ |
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ath_reg_apply_radar_flags(wiphy, reg); |
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|
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/* |
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* This would happen when we have sent a custom regulatory request |
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* a world regulatory domain and the scheduler hasn't yet processed |
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* any pending requests in the queue. |
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*/ |
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if (!request) |
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return; |
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|
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reg->region = request->dfs_region; |
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switch (request->initiator) { |
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case NL80211_REGDOM_SET_BY_CORE: |
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/* |
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* If common->reg_world_copy is world roaming it means we *were* |
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* world roaming... so we now have to restore that data. |
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*/ |
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if (!ath_is_world_regd(&common->reg_world_copy)) |
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break; |
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|
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memcpy(reg, &common->reg_world_copy, |
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sizeof(struct ath_regulatory)); |
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break; |
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case NL80211_REGDOM_SET_BY_DRIVER: |
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break; |
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case NL80211_REGDOM_SET_BY_USER: |
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if (ath_reg_dyn_country_user_allow(reg)) |
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ath_reg_dyn_country(wiphy, reg, request); |
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break; |
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case NL80211_REGDOM_SET_BY_COUNTRY_IE: |
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ath_reg_dyn_country(wiphy, reg, request); |
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break; |
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} |
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} |
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EXPORT_SYMBOL(ath_reg_notifier_apply); |
|
|
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static bool ath_regd_is_eeprom_valid(struct ath_regulatory *reg) |
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{ |
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u16 rd = ath_regd_get_eepromRD(reg); |
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int i; |
|
|
|
if (rd & COUNTRY_ERD_FLAG) { |
|
/* EEPROM value is a country code */ |
|
u16 cc = rd & ~COUNTRY_ERD_FLAG; |
|
printk(KERN_DEBUG |
|
"ath: EEPROM indicates we should expect " |
|
"a country code\n"); |
|
for (i = 0; i < ARRAY_SIZE(allCountries); i++) |
|
if (allCountries[i].countryCode == cc) |
|
return true; |
|
} else { |
|
/* EEPROM value is a regpair value */ |
|
if (rd != CTRY_DEFAULT) |
|
printk(KERN_DEBUG "ath: EEPROM indicates we " |
|
"should expect a direct regpair map\n"); |
|
for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) |
|
if (regDomainPairs[i].reg_domain == rd) |
|
return true; |
|
} |
|
printk(KERN_DEBUG |
|
"ath: invalid regulatory domain/country code 0x%x\n", rd); |
|
return false; |
|
} |
|
|
|
/* EEPROM country code to regpair mapping */ |
|
static struct country_code_to_enum_rd* |
|
ath_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; |
|
} |
|
|
|
/* EEPROM rd code to regpair mapping */ |
|
static struct country_code_to_enum_rd* |
|
ath_regd_find_country_by_rd(int regdmn) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < ARRAY_SIZE(allCountries); i++) { |
|
if (allCountries[i].regDmnEnum == regdmn) |
|
return &allCountries[i]; |
|
} |
|
return NULL; |
|
} |
|
|
|
/* Returns the map of the EEPROM set RD to a country code */ |
|
static u16 ath_regd_get_default_country(u16 rd) |
|
{ |
|
if (rd & COUNTRY_ERD_FLAG) { |
|
struct country_code_to_enum_rd *country = NULL; |
|
u16 cc = rd & ~COUNTRY_ERD_FLAG; |
|
|
|
country = ath_regd_find_country(cc); |
|
if (country != NULL) |
|
return cc; |
|
} |
|
|
|
return CTRY_DEFAULT; |
|
} |
|
|
|
static struct reg_dmn_pair_mapping* |
|
ath_get_regpair(int regdmn) |
|
{ |
|
int i; |
|
|
|
if (regdmn == NO_ENUMRD) |
|
return NULL; |
|
for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) { |
|
if (regDomainPairs[i].reg_domain == regdmn) |
|
return ®DomainPairs[i]; |
|
} |
|
return NULL; |
|
} |
|
|
|
static int |
|
ath_regd_init_wiphy(struct ath_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_STRICT_REG | |
|
REGULATORY_CUSTOM_REG; |
|
|
|
if (ath_is_world_regd(reg)) { |
|
/* |
|
* Anything applied here (prior to wiphy registration) gets |
|
* saved on the wiphy orig_* parameters |
|
*/ |
|
regd = ath_world_regdomain(reg); |
|
wiphy->regulatory_flags |= REGULATORY_COUNTRY_IE_FOLLOW_POWER; |
|
} else { |
|
/* |
|
* This gets applied in the case of the absence of CRDA, |
|
* it's our own custom world regulatory domain, similar to |
|
* cfg80211's but we enable passive scanning. |
|
*/ |
|
regd = ath_default_world_regdomain(); |
|
} |
|
|
|
wiphy_apply_custom_regulatory(wiphy, regd); |
|
ath_reg_apply_radar_flags(wiphy, reg); |
|
ath_reg_apply_world_flags(wiphy, NL80211_REGDOM_SET_BY_DRIVER, reg); |
|
return 0; |
|
} |
|
|
|
/* |
|
* Some users have reported their EEPROM programmed with |
|
* 0x8000 or 0x0 set, this is not a supported regulatory |
|
* domain but since we have more than one user with it we |
|
* need a solution for them. We default to 0x64, which is |
|
* the default Atheros world regulatory domain. |
|
*/ |
|
static void ath_regd_sanitize(struct ath_regulatory *reg) |
|
{ |
|
if (reg->current_rd != COUNTRY_ERD_FLAG && reg->current_rd != 0) |
|
return; |
|
printk(KERN_DEBUG "ath: EEPROM regdomain sanitized\n"); |
|
reg->current_rd = 0x64; |
|
} |
|
|
|
static int __ath_regd_init(struct ath_regulatory *reg) |
|
{ |
|
struct country_code_to_enum_rd *country = NULL; |
|
u16 regdmn; |
|
|
|
if (!reg) |
|
return -EINVAL; |
|
|
|
ath_regd_sanitize(reg); |
|
|
|
printk(KERN_DEBUG "ath: EEPROM regdomain: 0x%0x\n", reg->current_rd); |
|
|
|
if (!ath_regd_is_eeprom_valid(reg)) { |
|
pr_err("Invalid EEPROM contents\n"); |
|
return -EINVAL; |
|
} |
|
|
|
regdmn = ath_regd_get_eepromRD(reg); |
|
reg->country_code = ath_regd_get_default_country(regdmn); |
|
|
|
if (reg->country_code == CTRY_DEFAULT && |
|
regdmn == CTRY_DEFAULT) { |
|
printk(KERN_DEBUG "ath: EEPROM indicates default " |
|
"country code should be used\n"); |
|
reg->country_code = CTRY_UNITED_STATES; |
|
} |
|
|
|
if (reg->country_code == CTRY_DEFAULT) { |
|
country = NULL; |
|
} else { |
|
printk(KERN_DEBUG "ath: doing EEPROM country->regdmn " |
|
"map search\n"); |
|
country = ath_regd_find_country(reg->country_code); |
|
if (country == NULL) { |
|
printk(KERN_DEBUG |
|
"ath: no valid country maps found for " |
|
"country code: 0x%0x\n", |
|
reg->country_code); |
|
return -EINVAL; |
|
} else { |
|
regdmn = country->regDmnEnum; |
|
printk(KERN_DEBUG "ath: country maps to " |
|
"regdmn code: 0x%0x\n", |
|
regdmn); |
|
} |
|
} |
|
|
|
reg->regpair = ath_get_regpair(regdmn); |
|
|
|
if (!reg->regpair) { |
|
printk(KERN_DEBUG "ath: " |
|
"No regulatory domain pair found, cannot continue\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (!country) |
|
country = ath_regd_find_country_by_rd(regdmn); |
|
|
|
if (country) { |
|
reg->alpha2[0] = country->isoName[0]; |
|
reg->alpha2[1] = country->isoName[1]; |
|
} else { |
|
reg->alpha2[0] = '0'; |
|
reg->alpha2[1] = '0'; |
|
} |
|
|
|
printk(KERN_DEBUG "ath: Country alpha2 being used: %c%c\n", |
|
reg->alpha2[0], reg->alpha2[1]); |
|
printk(KERN_DEBUG "ath: Regpair used: 0x%0x\n", |
|
reg->regpair->reg_domain); |
|
|
|
return 0; |
|
} |
|
|
|
int |
|
ath_regd_init(struct ath_regulatory *reg, |
|
struct wiphy *wiphy, |
|
void (*reg_notifier)(struct wiphy *wiphy, |
|
struct regulatory_request *request)) |
|
{ |
|
struct ath_common *common = container_of(reg, struct ath_common, |
|
regulatory); |
|
int r; |
|
|
|
r = __ath_regd_init(reg); |
|
if (r) |
|
return r; |
|
|
|
if (ath_is_world_regd(reg)) |
|
memcpy(&common->reg_world_copy, reg, |
|
sizeof(struct ath_regulatory)); |
|
|
|
ath_regd_init_wiphy(reg, wiphy, reg_notifier); |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL(ath_regd_init); |
|
|
|
u32 ath_regd_get_band_ctl(struct ath_regulatory *reg, |
|
enum nl80211_band band) |
|
{ |
|
if (!reg->regpair || |
|
(reg->country_code == CTRY_DEFAULT && |
|
is_wwr_sku(ath_regd_get_eepromRD(reg)))) { |
|
return SD_NO_CTL; |
|
} |
|
|
|
if (ath_regd_get_eepromRD(reg) == CTRY_DEFAULT) { |
|
switch (reg->region) { |
|
case NL80211_DFS_FCC: |
|
return CTL_FCC; |
|
case NL80211_DFS_ETSI: |
|
return CTL_ETSI; |
|
case NL80211_DFS_JP: |
|
return CTL_MKK; |
|
default: |
|
break; |
|
} |
|
} |
|
|
|
switch (band) { |
|
case NL80211_BAND_2GHZ: |
|
return reg->regpair->reg_2ghz_ctl; |
|
case NL80211_BAND_5GHZ: |
|
return reg->regpair->reg_5ghz_ctl; |
|
default: |
|
return NO_CTL; |
|
} |
|
} |
|
EXPORT_SYMBOL(ath_regd_get_band_ctl);
|
|
|