Signed-off-by: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
---
net/wireless/reg.c | 299 ++++++++++++++++++++++++++++++++++-----------------
1 files changed, 199 insertions(+), 100 deletions(-)
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 6c8c719..9dce86a 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -54,14 +54,18 @@ static u32 supported_bandwidths[] = {
MHZ_TO_KHZ(20),
};
-/* Central wireless core regulatory domains, we only need two,
+/*
+ * Central wireless core regulatory domains, we only need two,
* the current one and a world regulatory domain in case we have no
- * information to give us an alpha2 */
+ * information to give us an alpha2
+ */
const struct ieee80211_regdomain *cfg80211_regdomain;
-/* We use this as a place for the rd structure built from the
+/*
+ * We use this as a place for the rd structure built from the
* last parsed country IE to rest until CRDA gets back to us with
- * what it thinks should apply for the same country */
+ * what it thinks should apply for the same country
+ */
static const struct ieee80211_regdomain *country_ie_regdomain;
static LIST_HEAD(reg_requests_list);
@@ -95,9 +99,11 @@ static char *ieee80211_regdom = "US";
module_param(ieee80211_regdom, charp, 0444);
MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code");
-/* We assume 40 MHz bandwidth for the old regulatory work.
+/*
+ * We assume 40 MHz bandwidth for the old regulatory work.
* We make emphasis we are using the exact same frequencies
- * as before */
+ * as before
+ */
static const struct ieee80211_regdomain us_regdom = {
.n_reg_rules = 6,
@@ -136,8 +142,10 @@ static const struct ieee80211_regdomain jp_regdom = {
static const struct ieee80211_regdomain eu_regdom = {
.n_reg_rules = 6,
- /* This alpha2 is bogus, we leave it here just for stupid
- * backward compatibility */
+ /*
+ * This alpha2 is bogus, we leave it here just for stupid
+ * backward compatibility
+ */
.alpha2 = "EU",
.reg_rules = {
/* IEEE 802.11b/g, channels 1..13 */
@@ -206,8 +214,10 @@ static void reset_regdomains(void)
cfg80211_regdomain = NULL;
}
-/* Dynamic world regulatory domain requested by the wireless
- * core upon initialization */
+/*
+ * Dynamic world regulatory domain requested by the wireless
+ * core upon initialization
+ */
static void update_world_regdomain(const struct ieee80211_regdomain *rd)
{
BUG_ON(!last_request);
@@ -248,8 +258,10 @@ static bool is_unknown_alpha2(const char *alpha2)
{
if (!alpha2)
return false;
- /* Special case where regulatory domain was built by driver
- * but a specific alpha2 cannot be determined */
+ /*
+ * Special case where regulatory domain was built by driver
+ * but a specific alpha2 cannot be determined
+ */
if (alpha2[0] == '9' && alpha2[1] == '9')
return true;
return false;
@@ -259,9 +271,11 @@ static bool is_intersected_alpha2(const char *alpha2)
{
if (!alpha2)
return false;
- /* Special case where regulatory domain is the
+ /*
+ * Special case where regulatory domain is the
* result of an intersection between two regulatory domain
- * structures */
+ * structures
+ */
if (alpha2[0] == '9' && alpha2[1] == '8')
return true;
return false;
@@ -314,8 +328,10 @@ static bool country_ie_integrity_changes(u32 checksum)
return false;
}
-/* This lets us keep regulatory code which is updated on a regulatory
- * basis in userspace. */
+/*
+ * This lets us keep regulatory code which is updated on a regulatory
+ * basis in userspace.
+ */
static int call_crda(const char *alpha2)
{
char country_env[9 + 2] = "COUNTRY=";
@@ -426,10 +442,12 @@ static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range,
#undef ONE_GHZ_IN_KHZ
}
-/* Converts a country IE to a regulatory domain. A regulatory domain
+/*
+ * Converts a country IE to a regulatory domain. A regulatory domain
* structure has a lot of information which the IE doesn't yet have,
* so for the other values we use upper max values as we will intersect
- * with our userspace regulatory agent to get lower bounds. */
+ * with our userspace regulatory agent to get lower bounds.
+ */
static struct ieee80211_regdomain *country_ie_2_rd(
u8 *country_ie,
u8 country_ie_len,
@@ -474,9 +492,11 @@ static struct ieee80211_regdomain *country_ie_2_rd(
*checksum ^= ((flags ^ alpha2[0] ^ alpha2[1]) << 8);
- /* We need to build a reg rule for each triplet, but first we must
+ /*
+ * We need to build a reg rule for each triplet, but first we must
* calculate the number of reg rules we will need. We will need one
- * for each channel subband */
+ * for each channel subband
+ */
while (country_ie_len >= 3) {
int end_channel = 0;
struct ieee80211_country_ie_triplet *triplet =
@@ -514,9 +534,11 @@ static struct ieee80211_regdomain *country_ie_2_rd(
if (cur_sub_max_channel < cur_channel)
return NULL;
- /* Do not allow overlapping channels. Also channels
+ /*
+ * Do not allow overlapping channels. Also channels
* passed in each subband must be monotonically
- * increasing */
+ * increasing
+ */
if (last_sub_max_channel) {
if (cur_channel <= last_sub_max_channel)
return NULL;
@@ -524,10 +546,12 @@ static struct ieee80211_regdomain *country_ie_2_rd(
return NULL;
}
- /* When dot11RegulatoryClassesRequired is supported
+ /*
+ * When dot11RegulatoryClassesRequired is supported
* we can throw ext triplets as part of this soup,
* for now we don't care when those change as we
- * don't support them */
+ * don't support them
+ */
*checksum ^= ((cur_channel ^ cur_sub_max_channel) << 8) |
((cur_sub_max_channel ^ cur_sub_max_channel) << 16) |
((triplet->chans.max_power ^ cur_sub_max_channel) << 24);
@@ -538,8 +562,10 @@ static struct ieee80211_regdomain *country_ie_2_rd(
country_ie_len -= 3;
num_rules++;
- /* Note: this is not a IEEE requirement but
- * simply a memory requirement */
+ /*
+ * Note: this is not a IEEE requirement but
+ * simply a memory requirement
+ */
if (num_rules > NL80211_MAX_SUPP_REG_RULES)
return NULL;
}
@@ -567,8 +593,10 @@ static struct ieee80211_regdomain *country_ie_2_rd(
struct ieee80211_freq_range *freq_range = NULL;
struct ieee80211_power_rule *power_rule = NULL;
- /* Must parse if dot11RegulatoryClassesRequired is true,
- * we don't support this yet */
+ /*
+ * Must parse if dot11RegulatoryClassesRequired is true,
+ * we don't support this yet
+ */
if (triplet->ext.reg_extension_id >=
IEEE80211_COUNTRY_EXTENSION_ID) {
country_ie += 3;
@@ -590,10 +618,12 @@ static struct ieee80211_regdomain *country_ie_2_rd(
end_channel = triplet->chans.first_channel +
(4 * (triplet->chans.num_channels - 1));
- /* The +10 is since the regulatory domain expects
+ /*
+ * The +10 is since the regulatory domain expects
* the actual band edge, not the center of freq for
* its start and end freqs, assuming 20 MHz bandwidth on
- * the channels passed */
+ * the channels passed
+ */
freq_range->start_freq_khz =
MHZ_TO_KHZ(ieee80211_channel_to_frequency(
triplet->chans.first_channel) - 10);
@@ -601,9 +631,11 @@ static struct ieee80211_regdomain *country_ie_2_rd(
MHZ_TO_KHZ(ieee80211_channel_to_frequency(
end_channel) + 10);
- /* Large arbitrary values, we intersect later */
- /* Increment this if we ever support >= 40 MHz channels
- * in IEEE 802.11 */
+ /*
+ * These are large arbitrary values we use to intersect later.
+ * Increment this if we ever support >= 40 MHz channels
+ * in IEEE 802.11
+ */
freq_range->max_bandwidth_khz = MHZ_TO_KHZ(40);
power_rule->max_antenna_gain = DBI_TO_MBI(100);
power_rule->max_eirp = DBM_TO_MBM(100);
@@ -619,8 +651,10 @@ static struct ieee80211_regdomain *country_ie_2_rd(
}
-/* Helper for regdom_intersect(), this does the real
- * mathematical intersection fun */
+/*
+ * Helper for regdom_intersect(), this does the real
+ * mathematical intersection fun
+ */
static int reg_rules_intersect(
const struct ieee80211_reg_rule *rule1,
const struct ieee80211_reg_rule *rule2,
@@ -698,11 +732,13 @@ static struct ieee80211_regdomain *regdom_intersect(
if (!rd1 || !rd2)
return NULL;
- /* First we get a count of the rules we'll need, then we actually
+ /*
+ * First we get a count of the rules we'll need, then we actually
* build them. This is to so we can malloc() and free() a
* regdomain once. The reason we use reg_rules_intersect() here
* is it will return -EINVAL if the rule computed makes no sense.
- * All rules that do check out OK are valid. */
+ * All rules that do check out OK are valid.
+ */
for (x = 0; x < rd1->n_reg_rules; x++) {
rule1 = &rd1->reg_rules[x];
@@ -730,14 +766,18 @@ static struct ieee80211_regdomain *regdom_intersect(
rule1 = &rd1->reg_rules[x];
for (y = 0; y < rd2->n_reg_rules; y++) {
rule2 = &rd2->reg_rules[y];
- /* This time around instead of using the stack lets
+ /*
+ * This time around instead of using the stack lets
* write to the target rule directly saving ourselves
- * a memcpy() */
+ * a memcpy()
+ */
intersected_rule = &rd->reg_rules[rule_idx];
r = reg_rules_intersect(rule1, rule2,
intersected_rule);
- /* No need to memset here the intersected rule here as
- * we're not using the stack anymore */
+ /*
+ * No need to memset here the intersected rule here as
+ * we're not using the stack anymore
+ */
if (r)
continue;
rule_idx++;
@@ -756,8 +796,10 @@ static struct ieee80211_regdomain *regdom_intersect(
return rd;
}
-/* XXX: add support for the rest of enum nl80211_reg_rule_flags, we may
- * want to just have the channel structure use these */
+/*
+ * XXX: add support for the rest of enum nl80211_reg_rule_flags, we may
+ * want to just have the channel structure use these
+ */
static u32 map_regdom_flags(u32 rd_flags)
{
u32 channel_flags = 0;
@@ -783,8 +825,10 @@ static int freq_reg_info_regd(struct wiphy *wiphy,
regd = custom_regd ? custom_regd : cfg80211_regdomain;
- /* Follow the driver's regulatory domain, if present, unless a country
- * IE has been processed or a user wants to help complaince further */
+ /*
+ * Follow the driver's regulatory domain, if present, unless a country
+ * IE has been processed or a user wants to help complaince further
+ */
if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE &&
last_request->initiator != REGDOM_SET_BY_USER &&
wiphy->regd)
@@ -802,9 +846,11 @@ static int freq_reg_info_regd(struct wiphy *wiphy,
fr = &rr->freq_range;
pr = &rr->power_rule;
- /* We only need to know if one frequency rule was
+ /*
+ * We only need to know if one frequency rule was
* was in center_freq's band, that's enough, so lets
- * not overwrite it once found */
+ * not overwrite it once found
+ */
if (!band_rule_found)
band_rule_found = freq_in_rule_band(fr, center_freq);
@@ -857,7 +903,8 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
&max_bandwidth, ®_rule);
if (r) {
- /* This means no regulatory rule was found in the country IE
+ /*
+ * This means no regulatory rule was found in the country IE
* with a frequency range on the center_freq's band, since
* IEEE-802.11 allows for a country IE to have a subset of the
* regulatory information provided in a country we ignore
@@ -876,8 +923,10 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
chan->center_freq, wiphy_name(wiphy));
#endif
} else {
- /* In this case we know the country IE has at least one reg rule
- * for the band so we respect its band definitions */
+ /*
+ * In this case we know the country IE has at least one reg rule
+ * for the band so we respect its band definitions
+ */
#ifdef CONFIG_CFG80211_REG_DEBUG
if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
printk(KERN_DEBUG "cfg80211: Disabling "
@@ -896,9 +945,11 @@ static void handle_channel(struct wiphy *wiphy, enum ieee80211_band band,
if (last_request->initiator == REGDOM_SET_BY_DRIVER &&
request_wiphy && request_wiphy == wiphy &&
request_wiphy->strict_regulatory) {
- /* This gaurantees the driver's requested regulatory domain
+ /*
+ * This gaurantees the driver's requested regulatory domain
* will always be used as a base for further regulatory
- * settings */
+ * settings
+ */
chan->flags = chan->orig_flags =
map_regdom_flags(reg_rule->flags);
chan->max_antenna_gain = chan->orig_mag =
@@ -939,8 +990,10 @@ static bool ignore_reg_update(struct wiphy *wiphy, enum reg_set_by setby)
if (setby == REGDOM_SET_BY_CORE &&
wiphy->custom_regulatory)
return true;
- /* wiphy->regd will be set once the device has its own
- * desired regulatory domain set */
+ /*
+ * wiphy->regd will be set once the device has its own
+ * desired regulatory domain set
+ */
if (wiphy->strict_regulatory && !wiphy->regd &&
!is_world_regdom(last_request->alpha2))
return true;
@@ -1050,8 +1103,10 @@ static int reg_copy_regd(const struct ieee80211_regdomain **dst_regd,
return 0;
}
-/* Return value which can be used by ignore_request() to indicate
- * it has been determined we should intersect two regulatory domains */
+/*
+ * Return value which can be used by ignore_request() to indicate
+ * it has been determined we should intersect two regulatory domains
+ */
#define REG_INTERSECT 1
/* This has the logic which determines when a new request
@@ -1091,8 +1146,10 @@ static int ignore_request(struct wiphy *wiphy, enum reg_set_by set_by,
return -EOPNOTSUPP;
return -EALREADY;
}
- /* Two consecutive Country IE hints on the same wiphy.
- * This should be picked up early by the driver/stack */
+ /*
+ * Two consecutive Country IE hints on the same wiphy.
+ * This should be picked up early by the driver/stack
+ */
if (WARN_ON(!alpha2_equal(cfg80211_regdomain->alpha2,
alpha2)))
return 0;
@@ -1111,13 +1168,17 @@ static int ignore_request(struct wiphy *wiphy, enum reg_set_by set_by,
case REGDOM_SET_BY_USER:
if (last_request->initiator == REGDOM_SET_BY_COUNTRY_IE)
return REG_INTERSECT;
- /* If the user knows better the user should set the regdom
- * to their country before the IE is picked up */
+ /*
+ * If the user knows better the user should set the regdom
+ * to their country before the IE is picked up
+ */
if (last_request->initiator == REGDOM_SET_BY_USER &&
last_request->intersect)
return -EOPNOTSUPP;
- /* Process user requests only after previous user/driver/core
- * requests have been processed */
+ /*
+ * Process user requests only after previous user/driver/core
+ * requests have been processed
+ */
if (last_request->initiator == REGDOM_SET_BY_CORE ||
last_request->initiator == REGDOM_SET_BY_DRIVER ||
last_request->initiator == REGDOM_SET_BY_USER) {
@@ -1158,9 +1219,11 @@ int __regulatory_hint(struct wiphy *wiphy, enum reg_set_by set_by,
}
intersect = true;
} else if (r) {
- /* If the regulatory domain being requested by the
+ /*
+ * If the regulatory domain being requested by the
* driver has already been set just copy it to the
- * wiphy */
+ * wiphy
+ */
if (r == -EALREADY && set_by == REGDOM_SET_BY_DRIVER) {
r = reg_copy_regd(&wiphy->regd, cfg80211_regdomain);
if (r)
@@ -1297,9 +1360,11 @@ static bool reg_same_country_ie_hint(struct wiphy *wiphy,
if (likely(request_wiphy != wiphy))
return !country_ie_integrity_changes(country_ie_checksum);
- /* We should not have let these through at this point, they
+ /*
+ * We should not have let these through at this point, they
* should have been picked up earlier by the first alpha2 check
- * on the device */
+ * on the device
+ */
if (WARN_ON(!country_ie_integrity_changes(country_ie_checksum)))
return true;
return false;
@@ -1326,9 +1391,11 @@ void regulatory_hint_11d(struct wiphy *wiphy,
if (country_ie_len < IEEE80211_COUNTRY_IE_MIN_LEN)
goto out;
- /* Pending country IE processing, this can happen after we
+ /*
+ * Pending country IE processing, this can happen after we
* call CRDA and wait for a response if a beacon was received before
- * we were able to process the last regulatory_hint_11d() call */
+ * we were able to process the last regulatory_hint_11d() call
+ */
if (country_ie_regdomain)
goto out;
@@ -1340,34 +1407,44 @@ void regulatory_hint_11d(struct wiphy *wiphy,
else if (country_ie[2] == 'O')
env = ENVIRON_OUTDOOR;
- /* We will run this for *every* beacon processed for the BSSID, so
+ /*
+ * We will run this for *every* beacon processed for the BSSID, so
* we optimize an early check to exit out early if we don't have to
- * do anything */
+ * do anything
+ */
if (likely(wiphy_idx_valid(last_request->wiphy_idx))) {
struct cfg80211_registered_device *drv_last_ie;
drv_last_ie =
cfg80211_drv_by_wiphy_idx(last_request->wiphy_idx);
- /* Lets keep this simple -- we trust the first AP
- * after we intersect with CRDA */
+ /*
+ * Lets keep this simple -- we trust the first AP
+ * after we intersect with CRDA
+ */
if (likely(&drv_last_ie->wiphy == wiphy)) {
- /* Ignore IEs coming in on this wiphy with
- * the same alpha2 and environment cap */
+ /*
+ * Ignore IEs coming in on this wiphy with
+ * the same alpha2 and environment cap
+ */
if (likely(alpha2_equal(drv_last_ie->country_ie_alpha2,
alpha2) &&
env == drv_last_ie->env)) {
goto out;
}
- /* the wiphy moved on to another BSSID or the AP
+ /*
+ * the wiphy moved on to another BSSID or the AP
* was reconfigured. XXX: We need to deal with the
* case where the user suspends and goes to goes
* to another country, and then gets IEs from an
- * AP with different settings */
+ * AP with different settings
+ */
goto out;
} else {
- /* Ignore IEs coming in on two separate wiphys with
- * the same alpha2 and environment cap */
+ /*
+ * Ignore IEs coming in on two separate wiphys with
+ * the same alpha2 and environment cap
+ */
if (likely(alpha2_equal(drv_last_ie->country_ie_alpha2,
alpha2) &&
env == drv_last_ie->env)) {
@@ -1382,18 +1459,22 @@ void regulatory_hint_11d(struct wiphy *wiphy,
if (!rd)
goto out;
- /* This will not happen right now but we leave it here for the
+ /*
+ * This will not happen right now but we leave it here for the
* the future when we want to add suspend/resume support and having
* the user move to another country after doing so, or having the user
* move to another AP. Right now we just trust the first AP. This is why
* this is marked as likley(). If we hit this before we add this support
* we want to be informed of it as it would indicate a mistake in the
- * current design */
+ * current design
+ */
if (likely(WARN_ON(reg_same_country_ie_hint(wiphy, checksum))))
goto out;
- /* We keep this around for when CRDA comes back with a response so
- * we can intersect with that */
+ /*
+ * We keep this around for when CRDA comes back with a response so
+ * we can intersect with that
+ */
country_ie_regdomain = rd;
__regulatory_hint(wiphy, REGDOM_SET_BY_COUNTRY_IE,
@@ -1419,8 +1500,10 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
freq_range = ®_rule->freq_range;
power_rule = ®_rule->power_rule;
- /* There may not be documentation for max antenna gain
- * in certain regions */
+ /*
+ * There may not be documentation for max antenna gain
+ * in certain regions
+ */
if (power_rule->max_antenna_gain)
printk(KERN_INFO "\t(%d KHz - %d KHz @ %d KHz), "
"(%d mBi, %d mBm)\n",
@@ -1531,9 +1614,11 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
if (!last_request)
return -EINVAL;
- /* Lets only bother proceeding on the same alpha2 if the current
+ /*
+ * Lets only bother proceeding on the same alpha2 if the current
* rd is non static (it means CRDA was present and was used last)
- * and the pending request came in from a country IE */
+ * and the pending request came in from a country IE
+ */
if (last_request->initiator != REGDOM_SET_BY_COUNTRY_IE) {
/* If someone else asked us to change the rd lets only bother
* checking if the alpha2 changes if CRDA was already called */
@@ -1542,10 +1627,12 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
return -EINVAL;
}
- /* Now lets set the regulatory domain, update all driver channels
+ /*
+ * Now lets set the regulatory domain, update all driver channels
* and finally inform them of what we have done, in case they want
* to review or adjust their own settings based on their own
- * internal EEPROM data */
+ * internal EEPROM data
+ */
if (WARN_ON(!reg_is_valid_request(rd->alpha2)))
return -EINVAL;
@@ -1568,8 +1655,10 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
return 0;
}
- /* For a driver hint, lets copy the regulatory domain the
- * driver wanted to the wiphy to deal with conflicts */
+ /*
+ * For a driver hint, lets copy the regulatory domain the
+ * driver wanted to the wiphy to deal with conflicts
+ */
BUG_ON(request_wiphy->regd);
@@ -1590,9 +1679,11 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
if (!intersected_rd)
return -EINVAL;
- /* We can trash what CRDA provided now.
+ /*
+ * We can trash what CRDA provided now.
* However if a driver requested this specific regulatory
- * domain we keep it for its private use */
+ * domain we keep it for its private use
+ */
if (last_request->initiator == REGDOM_SET_BY_DRIVER)
request_wiphy->regd = rd;
else
@@ -1614,8 +1705,10 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
BUG_ON(!country_ie_regdomain);
if (rd != country_ie_regdomain) {
- /* Intersect what CRDA returned and our what we
- * had built from the Country IE received */
+ /*
+ * Intersect what CRDA returned and our what we
+ * had built from the Country IE received
+ */
intersected_rd = regdom_intersect(rd, country_ie_regdomain);
@@ -1625,9 +1718,11 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
kfree(country_ie_regdomain);
country_ie_regdomain = NULL;
} else {
- /* This would happen when CRDA was not present and
+ /*
+ * This would happen when CRDA was not present and
* OLD_REGULATORY was enabled. We intersect our Country
- * IE rd and what was set on cfg80211 originally */
+ * IE rd and what was set on cfg80211 originally
+ */
intersected_rd = regdom_intersect(rd, cfg80211_regdomain);
}
@@ -1652,9 +1747,11 @@ static int __set_regdom(const struct ieee80211_regdomain *rd)
}
-/* Use this call to set the current regulatory domain. Conflicts with
+/*
+ * Use this call to set the current regulatory domain. Conflicts with
* multiple drivers can be ironed out later. Caller must've already
- * kmalloc'd the rd structure. Caller must hold cfg80211_mutex */
+ * kmalloc'd the rd structure. Caller must hold cfg80211_mutex
+ */
int set_regdom(const struct ieee80211_regdomain *rd)
{
int r;
@@ -1763,10 +1860,12 @@ int regulatory_init(void)
printk(KERN_INFO "cfg80211: Using static regulatory domain info\n");
print_regdomain_info(cfg80211_regdomain);
- /* The old code still requests for a new regdomain and if
+ /*
+ * The old code still requests for a new regdomain and if
* you have CRDA you get it updated, otherwise you get
* stuck with the static values. We ignore "EU" code as
- * that is not a valid ISO / IEC 3166 alpha2 */
+ * that is not a valid ISO / IEC 3166 alpha2
+ */
if (ieee80211_regdom[0] != 'E' || ieee80211_regdom[1] != 'U')
err = regulatory_hint_core(ieee80211_regdom);
#else
--
1.6.1.2.253.ga34a
--
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