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-rw-r--r--net/wireless/reg.c141
1 files changed, 121 insertions, 20 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 3302c56f60d1..f65feaad155f 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2,13 +2,22 @@
* Copyright 2002-2005, Instant802 Networks, Inc.
* Copyright 2005-2006, Devicescape Software, Inc.
* Copyright 2007 Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2008 Luis R. Rodriguez <lrodriguz@atheros.com>
+ * Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
+
/**
* DOC: Wireless regulatory infrastructure
*
@@ -873,10 +882,22 @@ static void handle_channel(struct wiphy *wiphy,
chan->flags = flags | bw_flags | map_regdom_flags(reg_rule->flags);
chan->max_antenna_gain = min(chan->orig_mag,
(int) MBI_TO_DBI(power_rule->max_antenna_gain));
- if (chan->orig_mpwr)
- chan->max_power = min(chan->orig_mpwr,
- (int) MBM_TO_DBM(power_rule->max_eirp));
- else
+ if (chan->orig_mpwr) {
+ /*
+ * Devices that have their own custom regulatory domain
+ * but also use WIPHY_FLAG_STRICT_REGULATORY will follow the
+ * passed country IE power settings.
+ */
+ if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+ wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY &&
+ wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) {
+ chan->max_power =
+ MBM_TO_DBM(power_rule->max_eirp);
+ } else {
+ chan->max_power = min(chan->orig_mpwr,
+ (int) MBM_TO_DBM(power_rule->max_eirp));
+ }
+ } else
chan->max_power = (int) MBM_TO_DBM(power_rule->max_eirp);
}
@@ -1139,6 +1160,8 @@ static void wiphy_update_regulatory(struct wiphy *wiphy,
if (ignore_reg_update(wiphy, initiator))
return;
+ last_request->dfs_region = cfg80211_regdomain->dfs_region;
+
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
if (wiphy->bands[band])
handle_band(wiphy, band, initiator);
@@ -1161,9 +1184,21 @@ void regulatory_update(struct wiphy *wiphy,
static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
{
struct cfg80211_registered_device *rdev;
+ struct wiphy *wiphy;
- list_for_each_entry(rdev, &cfg80211_rdev_list, list)
- wiphy_update_regulatory(&rdev->wiphy, initiator);
+ list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ wiphy = &rdev->wiphy;
+ wiphy_update_regulatory(wiphy, initiator);
+ /*
+ * Regulatory updates set by CORE are ignored for custom
+ * regulatory cards. Let us notify the changes to the driver,
+ * as some drivers used this to restore its orig_* reg domain.
+ */
+ if (initiator == NL80211_REGDOM_SET_BY_CORE &&
+ wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY &&
+ wiphy->reg_notifier)
+ wiphy->reg_notifier(wiphy, last_request);
+ }
}
static void handle_channel_custom(struct wiphy *wiphy,
@@ -1454,18 +1489,18 @@ new_request:
}
/* This processes *all* regulatory hints */
-static void reg_process_hint(struct regulatory_request *reg_request)
+static void reg_process_hint(struct regulatory_request *reg_request,
+ enum nl80211_reg_initiator reg_initiator)
{
int r = 0;
struct wiphy *wiphy = NULL;
- enum nl80211_reg_initiator initiator = reg_request->initiator;
BUG_ON(!reg_request->alpha2);
if (wiphy_idx_valid(reg_request->wiphy_idx))
wiphy = wiphy_idx_to_wiphy(reg_request->wiphy_idx);
- if (reg_request->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
+ if (reg_initiator == NL80211_REGDOM_SET_BY_DRIVER &&
!wiphy) {
kfree(reg_request);
return;
@@ -1475,7 +1510,7 @@ static void reg_process_hint(struct regulatory_request *reg_request)
/* This is required so that the orig_* parameters are saved */
if (r == -EALREADY && wiphy &&
wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY) {
- wiphy_update_regulatory(wiphy, initiator);
+ wiphy_update_regulatory(wiphy, reg_initiator);
return;
}
@@ -1484,7 +1519,7 @@ static void reg_process_hint(struct regulatory_request *reg_request)
* source of bogus requests.
*/
if (r != -EALREADY &&
- reg_request->initiator == NL80211_REGDOM_SET_BY_USER)
+ reg_initiator == NL80211_REGDOM_SET_BY_USER)
schedule_delayed_work(&reg_timeout, msecs_to_jiffies(3142));
}
@@ -1521,7 +1556,7 @@ static void reg_process_pending_hints(void)
spin_unlock(&reg_requests_lock);
- reg_process_hint(reg_request);
+ reg_process_hint(reg_request, reg_request->initiator);
out:
mutex_unlock(&reg_mutex);
@@ -1766,6 +1801,26 @@ static void restore_alpha2(char *alpha2, bool reset_user)
REG_DBG_PRINT("Restoring regulatory settings\n");
}
+static void restore_custom_reg_settings(struct wiphy *wiphy)
+{
+ struct ieee80211_supported_band *sband;
+ enum ieee80211_band band;
+ struct ieee80211_channel *chan;
+ int i;
+
+ for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
+ sband = wiphy->bands[band];
+ if (!sband)
+ continue;
+ for (i = 0; i < sband->n_channels; i++) {
+ chan = &sband->channels[i];
+ chan->flags = chan->orig_flags;
+ chan->max_antenna_gain = chan->orig_mag;
+ chan->max_power = chan->orig_mpwr;
+ }
+ }
+}
+
/*
* Restoring regulatory settings involves ingoring any
* possibly stale country IE information and user regulatory
@@ -1784,9 +1839,11 @@ static void restore_alpha2(char *alpha2, bool reset_user)
static void restore_regulatory_settings(bool reset_user)
{
char alpha2[2];
+ char world_alpha2[2];
struct reg_beacon *reg_beacon, *btmp;
struct regulatory_request *reg_request, *tmp;
LIST_HEAD(tmp_reg_req_list);
+ struct cfg80211_registered_device *rdev;
mutex_lock(&cfg80211_mutex);
mutex_lock(&reg_mutex);
@@ -1834,11 +1891,18 @@ static void restore_regulatory_settings(bool reset_user)
/* First restore to the basic regulatory settings */
cfg80211_regdomain = cfg80211_world_regdom;
+ world_alpha2[0] = cfg80211_regdomain->alpha2[0];
+ world_alpha2[1] = cfg80211_regdomain->alpha2[1];
+
+ list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ if (rdev->wiphy.flags & WIPHY_FLAG_CUSTOM_REGULATORY)
+ restore_custom_reg_settings(&rdev->wiphy);
+ }
mutex_unlock(&reg_mutex);
mutex_unlock(&cfg80211_mutex);
- regulatory_hint_core(cfg80211_regdomain->alpha2);
+ regulatory_hint_core(world_alpha2);
/*
* This restores the ieee80211_regdom module parameter
@@ -1935,7 +1999,7 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
const struct ieee80211_freq_range *freq_range = NULL;
const struct ieee80211_power_rule *power_rule = NULL;
- pr_info(" (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)\n");
+ pr_info(" (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)\n");
for (i = 0; i < rd->n_reg_rules; i++) {
reg_rule = &rd->reg_rules[i];
@@ -1947,14 +2011,14 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
* in certain regions
*/
if (power_rule->max_antenna_gain)
- pr_info(" (%d KHz - %d KHz @ %d KHz), (%d mBi, %d mBm)\n",
+ pr_info(" (%d KHz - %d KHz @ %d KHz), (%d mBi, %d mBm)\n",
freq_range->start_freq_khz,
freq_range->end_freq_khz,
freq_range->max_bandwidth_khz,
power_rule->max_antenna_gain,
power_rule->max_eirp);
else
- pr_info(" (%d KHz - %d KHz @ %d KHz), (N/A, %d mBm)\n",
+ pr_info(" (%d KHz - %d KHz @ %d KHz), (N/A, %d mBm)\n",
freq_range->start_freq_khz,
freq_range->end_freq_khz,
freq_range->max_bandwidth_khz,
@@ -1962,6 +2026,42 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
}
}
+bool reg_supported_dfs_region(u8 dfs_region)
+{
+ switch (dfs_region) {
+ case NL80211_DFS_UNSET:
+ case NL80211_DFS_FCC:
+ case NL80211_DFS_ETSI:
+ case NL80211_DFS_JP:
+ return true;
+ default:
+ REG_DBG_PRINT("Ignoring uknown DFS master region: %d\n",
+ dfs_region);
+ return false;
+ }
+}
+
+static void print_dfs_region(u8 dfs_region)
+{
+ if (!dfs_region)
+ return;
+
+ switch (dfs_region) {
+ case NL80211_DFS_FCC:
+ pr_info(" DFS Master region FCC");
+ break;
+ case NL80211_DFS_ETSI:
+ pr_info(" DFS Master region ETSI");
+ break;
+ case NL80211_DFS_JP:
+ pr_info(" DFS Master region JP");
+ break;
+ default:
+ pr_info(" DFS Master region Uknown");
+ break;
+ }
+}
+
static void print_regdomain(const struct ieee80211_regdomain *rd)
{
@@ -1989,6 +2089,7 @@ static void print_regdomain(const struct ieee80211_regdomain *rd)
pr_info("Regulatory domain changed to country: %c%c\n",
rd->alpha2[0], rd->alpha2[1]);
}
+ print_dfs_region(rd->dfs_region);
print_rd_rules(rd);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.