401 lines
11 KiB
C
401 lines
11 KiB
C
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/******************************************************************************
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*
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* Copyright(c) 2009-2010 Realtek Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* wlanfae <wlanfae@realtek.com>
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* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
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* Hsinchu 300, Taiwan.
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*
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* Larry Finger <Larry.Finger@lwfinger.net>
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*
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*****************************************************************************/
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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 allCountries[] = {
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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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};
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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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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_global = {
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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 const struct ieee80211_regdomain rtl_regdom_world = {
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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 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 ieee80211_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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u32 bandwidth = 0;
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int r;
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for (band = 0; band < IEEE80211_NUM_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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r = freq_reg_info(wiphy, ch->center_freq,
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bandwidth, ®_rule);
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if (r)
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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->
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flags & 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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u32 bandwidth = 0;
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int r;
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sband = wiphy->bands[IEEE80211_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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r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
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if (!r) {
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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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r = freq_reg_info(wiphy, ch->center_freq, bandwidth, ®_rule);
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if (!r) {
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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[IEEE80211_BAND_5GHZ])
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return;
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sband = wiphy->bands[IEEE80211_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 void _rtl_dump_channel_map(struct wiphy *wiphy)
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{
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enum ieee80211_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 < IEEE80211_NUM_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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}
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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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_rtl_dump_channel_map(wiphy);
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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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case COUNTRY_CODE_IC:
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return &rtl_regdom_11;
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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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case COUNTRY_CODE_TELEC_NETGEAR:
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return &rtl_regdom_world;
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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_global;
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case COUNTRY_CODE_GLOBAL_DOMAIN:
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return &rtl_regdom_global;
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case COUNTRY_CODE_WORLD_WIDE_13:
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return &rtl_regdom_world;
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default:
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return &rtl_regdom_world;
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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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int (*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->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;
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wiphy->flags &= ~WIPHY_FLAG_STRICT_REGULATORY;
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wiphy->flags &= ~WIPHY_FLAG_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(allCountries); i++) {
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if (allCountries[i].countrycode == countrycode)
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return &allCountries[i];
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}
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return NULL;
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}
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int rtl_regd_init(struct ieee80211_hw *hw,
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int (*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 == NULL || &rtlpriv->regd == NULL)
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return -EINVAL;
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/* force the channel plan to world wide 13 */
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rtlpriv->regd.country_code = COUNTRY_CODE_WORLD_WIDE_13;
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RT_TRACE(rtlpriv, COMP_REGD, DBG_TRACE,
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|
|
(KERN_DEBUG "rtl: EEPROM regdomain: 0x%0x\n",
|
||
|
|
rtlpriv->regd.country_code));
|
||
|
|
|
||
|
|
if (rtlpriv->regd.country_code >= COUNTRY_CODE_MAX) {
|
||
|
|
RT_TRACE(rtlpriv, COMP_REGD, DBG_DMESG,
|
||
|
|
(KERN_DEBUG "rtl: EEPROM indicates invalid contry 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->isoName[0];
|
||
|
|
rtlpriv->regd.alpha2[1] = country->isoName[1];
|
||
|
|
} else {
|
||
|
|
rtlpriv->regd.alpha2[0] = '0';
|
||
|
|
rtlpriv->regd.alpha2[1] = '0';
|
||
|
|
}
|
||
|
|
|
||
|
|
RT_TRACE(rtlpriv, COMP_REGD, DBG_TRACE,
|
||
|
|
(KERN_DEBUG "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;
|
||
|
|
}
|
||
|
|
|
||
|
|
int 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);
|
||
|
|
|
||
|
|
RT_TRACE(rtlpriv, COMP_REGD, DBG_LOUD, ("\n"));
|
||
|
|
|
||
|
|
return _rtl_reg_notifier_apply(wiphy, request, &rtlpriv->regd);
|
||
|
|
}
|