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-rw-r--r--net/wireless/reg.c1083
1 files changed, 759 insertions, 324 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index ecfb1a06dbb2..73cab51f6379 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -5,7 +5,7 @@
* Copyright 2008-2011 Luis R. Rodriguez <mcgrof@qca.qualcomm.com>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright 2017 Intel Deutschland GmbH
- * Copyright (C) 2018 Intel Corporation
+ * Copyright (C) 2018 - 2025 Intel Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -53,10 +53,12 @@
#include <linux/list.h>
#include <linux/ctype.h>
#include <linux/nl80211.h>
-#include <linux/platform_device.h>
+#include <linux/device/faux.h>
#include <linux/verification.h>
#include <linux/moduleparam.h>
#include <linux/firmware.h>
+#include <linux/units.h>
+
#include <net/cfg80211.h>
#include "core.h"
#include "reg.h"
@@ -103,7 +105,7 @@ static struct regulatory_request __rcu *last_request =
(void __force __rcu *)&core_request_world;
/* To trigger userspace events and load firmware */
-static struct platform_device *reg_pdev;
+static struct faux_device *reg_fdev;
/*
* Central wireless core regulatory domains, we only need two,
@@ -126,22 +128,32 @@ static int reg_num_devs_support_basehint;
* is relevant for all registered devices.
*/
static bool reg_is_indoor;
-static spinlock_t reg_indoor_lock;
+static DEFINE_SPINLOCK(reg_indoor_lock);
/* Used to track the userspace process controlling the indoor setting */
static u32 reg_is_indoor_portid;
-static void restore_regulatory_settings(bool reset_user);
+static void restore_regulatory_settings(bool reset_user, bool cached);
+static void print_regdomain(const struct ieee80211_regdomain *rd);
+static void reg_process_hint(struct regulatory_request *reg_request);
static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
{
return rcu_dereference_rtnl(cfg80211_regdomain);
}
+/*
+ * Returns the regulatory domain associated with the wiphy.
+ *
+ * Requires any of RTNL, wiphy mutex or RCU protection.
+ */
const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy)
{
- return rcu_dereference_rtnl(wiphy->regd);
+ return rcu_dereference_check(wiphy->regd,
+ lockdep_is_held(&wiphy->mtx) ||
+ lockdep_rtnl_is_held());
}
+EXPORT_SYMBOL(get_wiphy_regdom);
static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region)
{
@@ -162,8 +174,12 @@ enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
{
const struct ieee80211_regdomain *regd = NULL;
const struct ieee80211_regdomain *wiphy_regd = NULL;
+ enum nl80211_dfs_regions dfs_region;
+ rcu_read_lock();
regd = get_cfg80211_regdom();
+ dfs_region = regd->dfs_region;
+
if (!wiphy)
goto out;
@@ -171,6 +187,11 @@ enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
if (!wiphy_regd)
goto out;
+ if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {
+ dfs_region = wiphy_regd->dfs_region;
+ goto out;
+ }
+
if (wiphy_regd->dfs_region == regd->dfs_region)
goto out;
@@ -180,7 +201,9 @@ enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
reg_dfs_region_str(regd->dfs_region));
out:
- return regd->dfs_region;
+ rcu_read_unlock();
+
+ return dfs_region;
}
static void rcu_free_regdom(const struct ieee80211_regdomain *r)
@@ -197,11 +220,11 @@ static struct regulatory_request *get_last_request(void)
/* Used to queue up regulatory hints */
static LIST_HEAD(reg_requests_list);
-static spinlock_t reg_requests_lock;
+static DEFINE_SPINLOCK(reg_requests_lock);
/* Used to queue up beacon hints for review */
static LIST_HEAD(reg_pending_beacons);
-static spinlock_t reg_pending_beacons_lock;
+static DEFINE_SPINLOCK(reg_pending_beacons_lock);
/* Used to keep track of processed beacon hints */
static LIST_HEAD(reg_beacon_list);
@@ -263,6 +286,7 @@ static const struct ieee80211_regdomain *cfg80211_world_regdom =
static char *ieee80211_regdom = "00";
static char user_alpha2[2];
+static const struct ieee80211_regdomain *cfg80211_user_regdom;
module_param(ieee80211_regdom, charp, 0444);
MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain code");
@@ -383,7 +407,8 @@ static bool is_an_alpha2(const char *alpha2)
{
if (!alpha2)
return false;
- return isalpha(alpha2[0]) && isalpha(alpha2[1]);
+ return isascii(alpha2[0]) && isalpha(alpha2[0]) &&
+ isascii(alpha2[1]) && isalpha(alpha2[1]);
}
static bool alpha2_equal(const char *alpha2_x, const char *alpha2_y)
@@ -425,14 +450,10 @@ static const struct ieee80211_regdomain *
reg_copy_regd(const struct ieee80211_regdomain *src_regd)
{
struct ieee80211_regdomain *regd;
- int size_of_regd;
unsigned int i;
- size_of_regd =
- sizeof(struct ieee80211_regdomain) +
- src_regd->n_reg_rules * sizeof(struct ieee80211_reg_rule);
-
- regd = kzalloc(size_of_regd, GFP_KERNEL);
+ regd = kzalloc(struct_size(regd, reg_rules, src_regd->n_reg_rules),
+ GFP_KERNEL);
if (!regd)
return ERR_PTR(-ENOMEM);
@@ -445,6 +466,15 @@ reg_copy_regd(const struct ieee80211_regdomain *src_regd)
return regd;
}
+static void cfg80211_save_user_regdom(const struct ieee80211_regdomain *rd)
+{
+ ASSERT_RTNL();
+
+ if (!IS_ERR(cfg80211_user_regdom))
+ kfree(cfg80211_user_regdom);
+ cfg80211_user_regdom = reg_copy_regd(rd);
+}
+
struct reg_regdb_apply_request {
struct list_head list;
const struct ieee80211_regdomain *regdom;
@@ -510,7 +540,7 @@ static void crda_timeout_work(struct work_struct *work)
pr_debug("Timeout while waiting for CRDA to reply, restoring regulatory settings\n");
rtnl_lock();
reg_crda_timeouts++;
- restore_regulatory_settings(true);
+ restore_regulatory_settings(true, false);
rtnl_unlock();
}
@@ -553,7 +583,7 @@ static int call_crda(const char *alpha2)
else
pr_debug("Calling CRDA to update world regulatory domain\n");
- ret = kobject_uevent_env(&reg_pdev->dev.kobj, KOBJ_CHANGE, env);
+ ret = kobject_uevent_env(&reg_fdev->dev.kobj, KOBJ_CHANGE, env);
if (ret)
return ret;
@@ -710,51 +740,9 @@ static bool valid_country(const u8 *data, unsigned int size,
}
#ifdef CONFIG_CFG80211_REQUIRE_SIGNED_REGDB
-static struct key *builtin_regdb_keys;
-
-static void __init load_keys_from_buffer(const u8 *p, unsigned int buflen)
-{
- const u8 *end = p + buflen;
- size_t plen;
- key_ref_t key;
+#include <keys/asymmetric-type.h>
- while (p < end) {
- /* Each cert begins with an ASN.1 SEQUENCE tag and must be more
- * than 256 bytes in size.
- */
- if (end - p < 4)
- goto dodgy_cert;
- if (p[0] != 0x30 &&
- p[1] != 0x82)
- goto dodgy_cert;
- plen = (p[2] << 8) | p[3];
- plen += 4;
- if (plen > end - p)
- goto dodgy_cert;
-
- key = key_create_or_update(make_key_ref(builtin_regdb_keys, 1),
- "asymmetric", NULL, p, plen,
- ((KEY_POS_ALL & ~KEY_POS_SETATTR) |
- KEY_USR_VIEW | KEY_USR_READ),
- KEY_ALLOC_NOT_IN_QUOTA |
- KEY_ALLOC_BUILT_IN |
- KEY_ALLOC_BYPASS_RESTRICTION);
- if (IS_ERR(key)) {
- pr_err("Problem loading in-kernel X.509 certificate (%ld)\n",
- PTR_ERR(key));
- } else {
- pr_notice("Loaded X.509 cert '%s'\n",
- key_ref_to_ptr(key)->description);
- key_ref_put(key);
- }
- p += plen;
- }
-
- return;
-
-dodgy_cert:
- pr_err("Problem parsing in-kernel X.509 certificate list\n");
-}
+static struct key *builtin_regdb_keys;
static int __init load_builtin_regdb_keys(void)
{
@@ -770,22 +758,28 @@ static int __init load_builtin_regdb_keys(void)
pr_notice("Loading compiled-in X.509 certificates for regulatory database\n");
#ifdef CONFIG_CFG80211_USE_KERNEL_REGDB_KEYS
- load_keys_from_buffer(shipped_regdb_certs, shipped_regdb_certs_len);
+ x509_load_certificate_list(shipped_regdb_certs,
+ shipped_regdb_certs_len,
+ builtin_regdb_keys);
#endif
#ifdef CONFIG_CFG80211_EXTRA_REGDB_KEYDIR
if (CONFIG_CFG80211_EXTRA_REGDB_KEYDIR[0] != '\0')
- load_keys_from_buffer(extra_regdb_certs, extra_regdb_certs_len);
+ x509_load_certificate_list(extra_regdb_certs,
+ extra_regdb_certs_len,
+ builtin_regdb_keys);
#endif
return 0;
}
+MODULE_FIRMWARE("regulatory.db.p7s");
+
static bool regdb_has_valid_signature(const u8 *data, unsigned int size)
{
const struct firmware *sig;
bool result;
- if (request_firmware(&sig, "regulatory.db.p7s", &reg_pdev->dev))
+ if (request_firmware(&sig, "regulatory.db.p7s", &reg_fdev->dev))
return false;
result = verify_pkcs7_signature(data, size, sig->data, sig->size,
@@ -937,12 +931,10 @@ static int regdb_query_country(const struct fwdb_header *db,
unsigned int ptr = be16_to_cpu(country->coll_ptr) << 2;
struct fwdb_collection *coll = (void *)((u8 *)db + ptr);
struct ieee80211_regdomain *regdom;
- unsigned int size_of_regd, i;
-
- size_of_regd = sizeof(struct ieee80211_regdomain) +
- coll->n_rules * sizeof(struct ieee80211_reg_rule);
+ unsigned int i;
- regdom = kzalloc(size_of_regd, GFP_KERNEL);
+ regdom = kzalloc(struct_size(regdom, reg_rules, coll->n_rules),
+ GFP_KERNEL);
if (!regdom)
return -ENOMEM;
@@ -1024,8 +1016,13 @@ static void regdb_fw_cb(const struct firmware *fw, void *context)
}
rtnl_lock();
- if (WARN_ON(regdb && !IS_ERR(regdb))) {
- /* just restore and free new db */
+ if (regdb && !IS_ERR(regdb)) {
+ /* negative case - a bug
+ * positive case - can happen due to race in case of multiple cb's in
+ * queue, due to usage of asynchronous callback
+ *
+ * Either case, just restore and free new db.
+ */
} else if (set_error) {
regdb = ERR_PTR(set_error);
} else if (fw) {
@@ -1039,7 +1036,7 @@ static void regdb_fw_cb(const struct firmware *fw, void *context)
}
if (restore)
- restore_regulatory_settings(true);
+ restore_regulatory_settings(true, false);
rtnl_unlock();
@@ -1048,8 +1045,12 @@ static void regdb_fw_cb(const struct firmware *fw, void *context)
release_firmware(fw);
}
+MODULE_FIRMWARE("regulatory.db");
+
static int query_regdb_file(const char *alpha2)
{
+ int err;
+
ASSERT_RTNL();
if (regdb)
@@ -1059,9 +1060,13 @@ static int query_regdb_file(const char *alpha2)
if (!alpha2)
return -ENOMEM;
- return request_firmware_nowait(THIS_MODULE, true, "regulatory.db",
- &reg_pdev->dev, GFP_KERNEL,
- (void *)alpha2, regdb_fw_cb);
+ err = request_firmware_nowait(THIS_MODULE, true, "regulatory.db",
+ &reg_fdev->dev, GFP_KERNEL,
+ (void *)alpha2, regdb_fw_cb);
+ if (err)
+ kfree(alpha2);
+
+ return err;
}
int reg_reload_regdb(void)
@@ -1069,8 +1074,10 @@ int reg_reload_regdb(void)
const struct firmware *fw;
void *db;
int err;
+ const struct ieee80211_regdomain *current_regdomain;
+ struct regulatory_request *request;
- err = request_firmware(&fw, "regulatory.db", &reg_pdev->dev);
+ err = request_firmware(&fw, "regulatory.db", &reg_fdev->dev);
if (err)
return err;
@@ -1089,8 +1096,26 @@ int reg_reload_regdb(void)
if (!IS_ERR_OR_NULL(regdb))
kfree(regdb);
regdb = db;
- rtnl_unlock();
+ /* reset regulatory domain */
+ current_regdomain = get_cfg80211_regdom();
+
+ request = kzalloc(sizeof(*request), GFP_KERNEL);
+ if (!request) {
+ err = -ENOMEM;
+ goto out_unlock;
+ }
+
+ request->wiphy_idx = WIPHY_IDX_INVALID;
+ request->alpha2[0] = current_regdomain->alpha2[0];
+ request->alpha2[1] = current_regdomain->alpha2[1];
+ request->initiator = NL80211_REGDOM_SET_BY_CORE;
+ request->user_reg_hint_type = NL80211_USER_REG_HINT_USER;
+
+ reg_process_hint(request);
+
+out_unlock:
+ rtnl_unlock();
out:
release_firmware(fw);
return err;
@@ -1123,7 +1148,7 @@ static const struct ieee80211_regdomain *reg_get_regdomain(struct wiphy *wiphy)
/*
* Follow the driver's regulatory domain, if present, unless a country
- * IE has been processed or a user wants to help complaince further
+ * IE has been processed or a user wants to help compliance further
*/
if (lr->initiator != NL80211_REGDOM_SET_BY_COUNTRY_IE &&
lr->initiator != NL80211_REGDOM_SET_BY_USER &&
@@ -1188,6 +1213,8 @@ unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
{
unsigned int bw = reg_get_max_bandwidth_from_range(rd, rule);
+ if (rule->flags & NL80211_RRF_NO_320MHZ)
+ bw = min_t(unsigned int, bw, MHZ_TO_KHZ(160));
if (rule->flags & NL80211_RRF_NO_160MHZ)
bw = min_t(unsigned int, bw, MHZ_TO_KHZ(80));
if (rule->flags & NL80211_RRF_NO_80MHZ)
@@ -1255,28 +1282,27 @@ static bool is_valid_rd(const struct ieee80211_regdomain *rd)
* definitions (the "2.4 GHz band", the "5 GHz band" and the "60GHz band"),
* however it is safe for now to assume that a frequency rule should not be
* part of a frequency's band if the start freq or end freq are off by more
- * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 10 GHz for the
+ * than 2 GHz for the 2.4 and 5 GHz bands, and by more than 20 GHz for the
* 60 GHz band.
* This resolution can be lowered and should be considered as we add
* regulatory rule support for other "bands".
- **/
+ *
+ * Returns: whether or not the frequency is in the range
+ */
static bool freq_in_rule_band(const struct ieee80211_freq_range *freq_range,
u32 freq_khz)
{
-#define ONE_GHZ_IN_KHZ 1000000
/*
* From 802.11ad: directional multi-gigabit (DMG):
* Pertaining to operation in a frequency band containing a channel
* with the Channel starting frequency above 45 GHz.
*/
- u32 limit = freq_khz > 45 * ONE_GHZ_IN_KHZ ?
- 10 * ONE_GHZ_IN_KHZ : 2 * ONE_GHZ_IN_KHZ;
+ u32 limit = freq_khz > 45 * KHZ_PER_GHZ ? 20 * KHZ_PER_GHZ : 2 * KHZ_PER_GHZ;
if (abs(freq_khz - freq_range->start_freq_khz) <= limit)
return true;
if (abs(freq_khz - freq_range->end_freq_khz) <= limit)
return true;
return false;
-#undef ONE_GHZ_IN_KHZ
}
/*
@@ -1293,6 +1319,16 @@ reg_intersect_dfs_region(const enum nl80211_dfs_regions dfs_region1,
return dfs_region1;
}
+static void reg_wmm_rules_intersect(const struct ieee80211_wmm_ac *wmm_ac1,
+ const struct ieee80211_wmm_ac *wmm_ac2,
+ struct ieee80211_wmm_ac *intersect)
+{
+ intersect->cw_min = max_t(u16, wmm_ac1->cw_min, wmm_ac2->cw_min);
+ intersect->cw_max = max_t(u16, wmm_ac1->cw_max, wmm_ac2->cw_max);
+ intersect->cot = min_t(u16, wmm_ac1->cot, wmm_ac2->cot);
+ intersect->aifsn = max_t(u8, wmm_ac1->aifsn, wmm_ac2->aifsn);
+}
+
/*
* Helper for regdom_intersect(), this does the real
* mathematical intersection fun
@@ -1307,6 +1343,8 @@ static int reg_rules_intersect(const struct ieee80211_regdomain *rd1,
struct ieee80211_freq_range *freq_range;
const struct ieee80211_power_rule *power_rule1, *power_rule2;
struct ieee80211_power_rule *power_rule;
+ const struct ieee80211_wmm_rule *wmm_rule1, *wmm_rule2;
+ struct ieee80211_wmm_rule *wmm_rule;
u32 freq_diff, max_bandwidth1, max_bandwidth2;
freq_range1 = &rule1->freq_range;
@@ -1317,6 +1355,10 @@ static int reg_rules_intersect(const struct ieee80211_regdomain *rd1,
power_rule2 = &rule2->power_rule;
power_rule = &intersected_rule->power_rule;
+ wmm_rule1 = &rule1->wmm_rule;
+ wmm_rule2 = &rule2->wmm_rule;
+ wmm_rule = &intersected_rule->wmm_rule;
+
freq_range->start_freq_khz = max(freq_range1->start_freq_khz,
freq_range2->start_freq_khz);
freq_range->end_freq_khz = min(freq_range1->end_freq_khz,
@@ -1360,6 +1402,29 @@ static int reg_rules_intersect(const struct ieee80211_regdomain *rd1,
intersected_rule->dfs_cac_ms = max(rule1->dfs_cac_ms,
rule2->dfs_cac_ms);
+ if (rule1->has_wmm && rule2->has_wmm) {
+ u8 ac;
+
+ for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
+ reg_wmm_rules_intersect(&wmm_rule1->client[ac],
+ &wmm_rule2->client[ac],
+ &wmm_rule->client[ac]);
+ reg_wmm_rules_intersect(&wmm_rule1->ap[ac],
+ &wmm_rule2->ap[ac],
+ &wmm_rule->ap[ac]);
+ }
+
+ intersected_rule->has_wmm = true;
+ } else if (rule1->has_wmm) {
+ *wmm_rule = *wmm_rule1;
+ intersected_rule->has_wmm = true;
+ } else if (rule2->has_wmm) {
+ *wmm_rule = *wmm_rule2;
+ intersected_rule->has_wmm = true;
+ } else {
+ intersected_rule->has_wmm = false;
+ }
+
if (!is_valid_reg_rule(intersected_rule))
return -EINVAL;
@@ -1429,12 +1494,14 @@ static void add_rule(struct ieee80211_reg_rule *rule,
* Returns a pointer to the regulatory domain structure which will hold the
* resulting intersection of rules between rd1 and rd2. We will
* kzalloc() this structure for you.
+ *
+ * Returns: the intersected regdomain
*/
static struct ieee80211_regdomain *
regdom_intersect(const struct ieee80211_regdomain *rd1,
const struct ieee80211_regdomain *rd2)
{
- int r, size_of_regd;
+ int r;
unsigned int x, y;
unsigned int num_rules = 0;
const struct ieee80211_reg_rule *rule1, *rule2;
@@ -1465,10 +1532,7 @@ regdom_intersect(const struct ieee80211_regdomain *rd1,
if (!num_rules)
return NULL;
- size_of_regd = sizeof(struct ieee80211_regdomain) +
- num_rules * sizeof(struct ieee80211_reg_rule);
-
- rd = kzalloc(size_of_regd, GFP_KERNEL);
+ rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
if (!rd)
return NULL;
@@ -1523,6 +1587,24 @@ static u32 map_regdom_flags(u32 rd_flags)
channel_flags |= IEEE80211_CHAN_NO_80MHZ;
if (rd_flags & NL80211_RRF_NO_160MHZ)
channel_flags |= IEEE80211_CHAN_NO_160MHZ;
+ if (rd_flags & NL80211_RRF_NO_HE)
+ channel_flags |= IEEE80211_CHAN_NO_HE;
+ if (rd_flags & NL80211_RRF_NO_320MHZ)
+ channel_flags |= IEEE80211_CHAN_NO_320MHZ;
+ if (rd_flags & NL80211_RRF_NO_EHT)
+ channel_flags |= IEEE80211_CHAN_NO_EHT;
+ if (rd_flags & NL80211_RRF_DFS_CONCURRENT)
+ channel_flags |= IEEE80211_CHAN_DFS_CONCURRENT;
+ if (rd_flags & NL80211_RRF_NO_6GHZ_VLP_CLIENT)
+ channel_flags |= IEEE80211_CHAN_NO_6GHZ_VLP_CLIENT;
+ if (rd_flags & NL80211_RRF_NO_6GHZ_AFC_CLIENT)
+ channel_flags |= IEEE80211_CHAN_NO_6GHZ_AFC_CLIENT;
+ if (rd_flags & NL80211_RRF_PSD)
+ channel_flags |= IEEE80211_CHAN_PSD;
+ if (rd_flags & NL80211_RRF_ALLOW_6GHZ_VLP_AP)
+ channel_flags |= IEEE80211_CHAN_ALLOW_6GHZ_VLP_AP;
+ if (rd_flags & NL80211_RRF_ALLOW_20MHZ_ACTIVITY)
+ channel_flags |= IEEE80211_CHAN_ALLOW_20MHZ_ACTIVITY;
return channel_flags;
}
@@ -1546,7 +1628,7 @@ freq_reg_info_regd(u32 center_freq,
/*
* We only need to know if one frequency rule was
- * was in center_freq's band, that's enough, so lets
+ * in center_freq's band, that's enough, so let's
* not overwrite it once found
*/
if (!band_rule_found)
@@ -1568,10 +1650,12 @@ static const struct ieee80211_reg_rule *
__freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 min_bw)
{
const struct ieee80211_regdomain *regd = reg_get_regdomain(wiphy);
- const struct ieee80211_reg_rule *reg_rule = NULL;
+ static const u32 bws[] = {0, 1, 2, 4, 5, 8, 10, 16, 20};
+ const struct ieee80211_reg_rule *reg_rule = ERR_PTR(-ERANGE);
+ int i = ARRAY_SIZE(bws) - 1;
u32 bw;
- for (bw = MHZ_TO_KHZ(20); bw >= min_bw; bw = bw / 2) {
+ for (bw = MHZ_TO_KHZ(bws[i]); bw >= min_bw; bw = MHZ_TO_KHZ(bws[i--])) {
reg_rule = freq_reg_info_regd(center_freq, regd, bw);
if (!IS_ERR(reg_rule))
return reg_rule;
@@ -1583,7 +1667,9 @@ __freq_reg_info(struct wiphy *wiphy, u32 center_freq, u32 min_bw)
const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy,
u32 center_freq)
{
- return __freq_reg_info(wiphy, center_freq, MHZ_TO_KHZ(20));
+ u32 min_bw = center_freq < MHZ_TO_KHZ(1000) ? 1 : 20;
+
+ return __freq_reg_info(wiphy, center_freq, MHZ_TO_KHZ(min_bw));
}
EXPORT_SYMBOL(freq_reg_info);
@@ -1610,22 +1696,34 @@ static uint32_t reg_rule_to_chan_bw_flags(const struct ieee80211_regdomain *regd
const struct ieee80211_channel *chan)
{
const struct ieee80211_freq_range *freq_range = NULL;
- u32 max_bandwidth_khz, bw_flags = 0;
+ u32 max_bandwidth_khz, center_freq_khz, bw_flags = 0;
+ bool is_s1g = chan->band == NL80211_BAND_S1GHZ;
freq_range = &reg_rule->freq_range;
max_bandwidth_khz = freq_range->max_bandwidth_khz;
+ center_freq_khz = ieee80211_channel_to_khz(chan);
/* Check if auto calculation requested */
if (reg_rule->flags & NL80211_RRF_AUTO_BW)
max_bandwidth_khz = reg_get_max_bandwidth(regd, reg_rule);
+ if (is_s1g) {
+ if (max_bandwidth_khz < MHZ_TO_KHZ(16))
+ bw_flags |= IEEE80211_CHAN_NO_16MHZ;
+ if (max_bandwidth_khz < MHZ_TO_KHZ(8))
+ bw_flags |= IEEE80211_CHAN_NO_8MHZ;
+ if (max_bandwidth_khz < MHZ_TO_KHZ(4))
+ bw_flags |= IEEE80211_CHAN_NO_4MHZ;
+ return bw_flags;
+ }
+
/* If we get a reg_rule we can assume that at least 5Mhz fit */
if (!cfg80211_does_bw_fit_range(freq_range,
- MHZ_TO_KHZ(chan->center_freq),
+ center_freq_khz,
MHZ_TO_KHZ(10)))
bw_flags |= IEEE80211_CHAN_NO_10MHZ;
if (!cfg80211_does_bw_fit_range(freq_range,
- MHZ_TO_KHZ(chan->center_freq),
+ center_freq_khz,
MHZ_TO_KHZ(20)))
bw_flags |= IEEE80211_CHAN_NO_20MHZ;
@@ -1639,60 +1737,24 @@ static uint32_t reg_rule_to_chan_bw_flags(const struct ieee80211_regdomain *regd
bw_flags |= IEEE80211_CHAN_NO_80MHZ;
if (max_bandwidth_khz < MHZ_TO_KHZ(160))
bw_flags |= IEEE80211_CHAN_NO_160MHZ;
+ if (max_bandwidth_khz < MHZ_TO_KHZ(320))
+ bw_flags |= IEEE80211_CHAN_NO_320MHZ;
+
return bw_flags;
}
-/*
- * Note that right now we assume the desired channel bandwidth
- * is always 20 MHz for each individual channel (HT40 uses 20 MHz
- * per channel, the primary and the extension channel).
- */
-static void handle_channel(struct wiphy *wiphy,
- enum nl80211_reg_initiator initiator,
- struct ieee80211_channel *chan)
+static void handle_channel_single_rule(struct wiphy *wiphy,
+ enum nl80211_reg_initiator initiator,
+ struct ieee80211_channel *chan,
+ u32 flags,
+ struct regulatory_request *lr,
+ struct wiphy *request_wiphy,
+ const struct ieee80211_reg_rule *reg_rule)
{
- u32 flags, bw_flags = 0;
- const struct ieee80211_reg_rule *reg_rule = NULL;
+ u32 bw_flags = 0;
const struct ieee80211_power_rule *power_rule = NULL;
- struct wiphy *request_wiphy = NULL;
- struct regulatory_request *lr = get_last_request();
const struct ieee80211_regdomain *regd;
- request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx);
-
- flags = chan->orig_flags;
-
- reg_rule = freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
- if (IS_ERR(reg_rule)) {
- /*
- * We will disable all channels that do not match our
- * received regulatory rule unless the hint is coming
- * from a Country IE and the Country IE had no information
- * about a band. The IEEE 802.11 spec allows for an AP
- * to send only a subset of the regulatory rules allowed,
- * so an AP in the US that only supports 2.4 GHz may only send
- * a country IE with information for the 2.4 GHz band
- * while 5 GHz is still supported.
- */
- if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
- PTR_ERR(reg_rule) == -ERANGE)
- return;
-
- if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
- request_wiphy && request_wiphy == wiphy &&
- request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) {
- pr_debug("Disabling freq %d MHz for good\n",
- chan->center_freq);
- chan->orig_flags |= IEEE80211_CHAN_DISABLED;
- chan->flags = chan->orig_flags;
- } else {
- pr_debug("Disabling freq %d MHz\n",
- chan->center_freq);
- chan->flags |= IEEE80211_CHAN_DISABLED;
- }
- return;
- }
-
regd = reg_get_regdomain(wiphy);
power_rule = &reg_rule->power_rule;
@@ -1719,6 +1781,9 @@ static void handle_channel(struct wiphy *wiphy,
chan->dfs_cac_ms = reg_rule->dfs_cac_ms;
}
+ if (chan->flags & IEEE80211_CHAN_PSD)
+ chan->psd = reg_rule->psd;
+
return;
}
@@ -1739,6 +1804,9 @@ static void handle_channel(struct wiphy *wiphy,
chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
}
+ if (chan->flags & IEEE80211_CHAN_PSD)
+ chan->psd = reg_rule->psd;
+
if (chan->orig_mpwr) {
/*
* Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER
@@ -1754,6 +1822,210 @@ static void handle_channel(struct wiphy *wiphy,
chan->max_power = chan->max_reg_power;
}
+static void handle_channel_adjacent_rules(struct wiphy *wiphy,
+ enum nl80211_reg_initiator initiator,
+ struct ieee80211_channel *chan,
+ u32 flags,
+ struct regulatory_request *lr,
+ struct wiphy *request_wiphy,
+ const struct ieee80211_reg_rule *rrule1,
+ const struct ieee80211_reg_rule *rrule2,
+ struct ieee80211_freq_range *comb_range)
+{
+ u32 bw_flags1 = 0;
+ u32 bw_flags2 = 0;
+ const struct ieee80211_power_rule *power_rule1 = NULL;
+ const struct ieee80211_power_rule *power_rule2 = NULL;
+ const struct ieee80211_regdomain *regd;
+
+ regd = reg_get_regdomain(wiphy);
+
+ power_rule1 = &rrule1->power_rule;
+ power_rule2 = &rrule2->power_rule;
+ bw_flags1 = reg_rule_to_chan_bw_flags(regd, rrule1, chan);
+ bw_flags2 = reg_rule_to_chan_bw_flags(regd, rrule2, chan);
+
+ if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
+ request_wiphy && request_wiphy == wiphy &&
+ request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) {
+ /* This guarantees the driver's requested regulatory domain
+ * will always be used as a base for further regulatory
+ * settings
+ */
+ chan->flags =
+ map_regdom_flags(rrule1->flags) |
+ map_regdom_flags(rrule2->flags) |
+ bw_flags1 |
+ bw_flags2;
+ chan->orig_flags = chan->flags;
+ chan->max_antenna_gain =
+ min_t(int, MBI_TO_DBI(power_rule1->max_antenna_gain),
+ MBI_TO_DBI(power_rule2->max_antenna_gain));
+ chan->orig_mag = chan->max_antenna_gain;
+ chan->max_reg_power =
+ min_t(int, MBM_TO_DBM(power_rule1->max_eirp),
+ MBM_TO_DBM(power_rule2->max_eirp));
+ chan->max_power = chan->max_reg_power;
+ chan->orig_mpwr = chan->max_reg_power;
+
+ if (chan->flags & IEEE80211_CHAN_RADAR) {
+ chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
+ if (rrule1->dfs_cac_ms || rrule2->dfs_cac_ms)
+ chan->dfs_cac_ms = max_t(unsigned int,
+ rrule1->dfs_cac_ms,
+ rrule2->dfs_cac_ms);
+ }
+
+ if ((rrule1->flags & NL80211_RRF_PSD) &&
+ (rrule2->flags & NL80211_RRF_PSD))
+ chan->psd = min_t(s8, rrule1->psd, rrule2->psd);
+ else
+ chan->flags &= ~NL80211_RRF_PSD;
+
+ return;
+ }
+
+ chan->dfs_state = NL80211_DFS_USABLE;
+ chan->dfs_state_entered = jiffies;
+
+ chan->beacon_found = false;
+ chan->flags = flags | bw_flags1 | bw_flags2 |
+ map_regdom_flags(rrule1->flags) |
+ map_regdom_flags(rrule2->flags);
+
+ /* reg_rule_to_chan_bw_flags may forbids 10 and forbids 20 MHz
+ * (otherwise no adj. rule case), recheck therefore
+ */
+ if (cfg80211_does_bw_fit_range(comb_range,
+ ieee80211_channel_to_khz(chan),
+ MHZ_TO_KHZ(10)))
+ chan->flags &= ~IEEE80211_CHAN_NO_10MHZ;
+ if (cfg80211_does_bw_fit_range(comb_range,
+ ieee80211_channel_to_khz(chan),
+ MHZ_TO_KHZ(20)))
+ chan->flags &= ~IEEE80211_CHAN_NO_20MHZ;
+
+ chan->max_antenna_gain =
+ min_t(int, chan->orig_mag,
+ min_t(int,
+ MBI_TO_DBI(power_rule1->max_antenna_gain),
+ MBI_TO_DBI(power_rule2->max_antenna_gain)));
+ chan->max_reg_power = min_t(int,
+ MBM_TO_DBM(power_rule1->max_eirp),
+ MBM_TO_DBM(power_rule2->max_eirp));
+
+ if (chan->flags & IEEE80211_CHAN_RADAR) {
+ if (rrule1->dfs_cac_ms || rrule2->dfs_cac_ms)
+ chan->dfs_cac_ms = max_t(unsigned int,
+ rrule1->dfs_cac_ms,
+ rrule2->dfs_cac_ms);
+ else
+ chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
+ }
+
+ if (chan->orig_mpwr) {
+ /* Devices that use REGULATORY_COUNTRY_IE_FOLLOW_POWER
+ * will always follow the passed country IE power settings.
+ */
+ if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+ wiphy->regulatory_flags & REGULATORY_COUNTRY_IE_FOLLOW_POWER)
+ chan->max_power = chan->max_reg_power;
+ else
+ chan->max_power = min(chan->orig_mpwr,
+ chan->max_reg_power);
+ } else {
+ chan->max_power = chan->max_reg_power;
+ }
+}
+
+/* Note that right now we assume the desired channel bandwidth
+ * is always 20 MHz for each individual channel (HT40 uses 20 MHz
+ * per channel, the primary and the extension channel).
+ */
+static void handle_channel(struct wiphy *wiphy,
+ enum nl80211_reg_initiator initiator,
+ struct ieee80211_channel *chan)
+{
+ const u32 orig_chan_freq = ieee80211_channel_to_khz(chan);
+ struct regulatory_request *lr = get_last_request();
+ struct wiphy *request_wiphy = wiphy_idx_to_wiphy(lr->wiphy_idx);
+ const struct ieee80211_reg_rule *rrule = NULL;
+ const struct ieee80211_reg_rule *rrule1 = NULL;
+ const struct ieee80211_reg_rule *rrule2 = NULL;
+
+ u32 flags = chan->orig_flags;
+
+ rrule = freq_reg_info(wiphy, orig_chan_freq);
+ if (IS_ERR(rrule)) {
+ /* check for adjacent match, therefore get rules for
+ * chan - 20 MHz and chan + 20 MHz and test
+ * if reg rules are adjacent
+ */
+ rrule1 = freq_reg_info(wiphy,
+ orig_chan_freq - MHZ_TO_KHZ(20));
+ rrule2 = freq_reg_info(wiphy,
+ orig_chan_freq + MHZ_TO_KHZ(20));
+ if (!IS_ERR(rrule1) && !IS_ERR(rrule2)) {
+ struct ieee80211_freq_range comb_range;
+
+ if (rrule1->freq_range.end_freq_khz !=
+ rrule2->freq_range.start_freq_khz)
+ goto disable_chan;
+
+ comb_range.start_freq_khz =
+ rrule1->freq_range.start_freq_khz;
+ comb_range.end_freq_khz =
+ rrule2->freq_range.end_freq_khz;
+ comb_range.max_bandwidth_khz =
+ min_t(u32,
+ rrule1->freq_range.max_bandwidth_khz,
+ rrule2->freq_range.max_bandwidth_khz);
+
+ if (!cfg80211_does_bw_fit_range(&comb_range,
+ orig_chan_freq,
+ MHZ_TO_KHZ(20)))
+ goto disable_chan;
+
+ handle_channel_adjacent_rules(wiphy, initiator, chan,
+ flags, lr, request_wiphy,
+ rrule1, rrule2,
+ &comb_range);
+ return;
+ }
+
+disable_chan:
+ /* We will disable all channels that do not match our
+ * received regulatory rule unless the hint is coming
+ * from a Country IE and the Country IE had no information
+ * about a band. The IEEE 802.11 spec allows for an AP
+ * to send only a subset of the regulatory rules allowed,
+ * so an AP in the US that only supports 2.4 GHz may only send
+ * a country IE with information for the 2.4 GHz band
+ * while 5 GHz is still supported.
+ */
+ if (initiator == NL80211_REGDOM_SET_BY_COUNTRY_IE &&
+ PTR_ERR(rrule) == -ERANGE)
+ return;
+
+ if (lr->initiator == NL80211_REGDOM_SET_BY_DRIVER &&
+ request_wiphy && request_wiphy == wiphy &&
+ request_wiphy->regulatory_flags & REGULATORY_STRICT_REG) {
+ pr_debug("Disabling freq %d.%03d MHz for good\n",
+ chan->center_freq, chan->freq_offset);
+ chan->orig_flags |= IEEE80211_CHAN_DISABLED;
+ chan->flags = chan->orig_flags;
+ } else {
+ pr_debug("Disabling freq %d.%03d MHz\n",
+ chan->center_freq, chan->freq_offset);
+ chan->flags |= IEEE80211_CHAN_DISABLED;
+ }
+ return;
+ }
+
+ handle_channel_single_rule(wiphy, initiator, chan, flags, lr,
+ request_wiphy, rrule);
+}
+
static void handle_band(struct wiphy *wiphy,
enum nl80211_reg_initiator initiator,
struct ieee80211_supported_band *sband)
@@ -1877,6 +2149,13 @@ static bool reg_is_world_roaming(struct wiphy *wiphy)
return false;
}
+static void reg_call_notifier(struct wiphy *wiphy,
+ struct regulatory_request *request)
+{
+ if (wiphy->reg_notifier)
+ wiphy->reg_notifier(wiphy, request);
+}
+
static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx,
struct reg_beacon *reg_beacon)
{
@@ -1884,11 +2163,12 @@ static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx,
struct ieee80211_channel *chan;
bool channel_changed = false;
struct ieee80211_channel chan_before;
+ struct regulatory_request *lr = get_last_request();
sband = wiphy->bands[reg_beacon->chan.band];
chan = &sband->channels[chan_idx];
- if (likely(chan->center_freq != reg_beacon->chan.center_freq))
+ if (likely(!ieee80211_channel_equal(chan, &reg_beacon->chan)))
return;
if (chan->beacon_found)
@@ -1909,8 +2189,11 @@ static void handle_reg_beacon(struct wiphy *wiphy, unsigned int chan_idx,
channel_changed = true;
}
- if (channel_changed)
+ if (channel_changed) {
nl80211_send_beacon_hint_event(wiphy, &chan_before, chan);
+ if (wiphy->flags & WIPHY_FLAG_CHANNEL_CHANGE_ON_BEACON)
+ reg_call_notifier(wiphy, lr);
+ }
}
/*
@@ -2053,80 +2336,100 @@ static void reg_process_ht_flags(struct wiphy *wiphy)
reg_process_ht_flags_band(wiphy, wiphy->bands[band]);
}
-static void reg_call_notifier(struct wiphy *wiphy,
- struct regulatory_request *request)
-{
- if (wiphy->reg_notifier)
- wiphy->reg_notifier(wiphy, request);
-}
-
static bool reg_wdev_chan_valid(struct wiphy *wiphy, struct wireless_dev *wdev)
{
- struct cfg80211_chan_def chandef;
+ struct cfg80211_chan_def chandef = {};
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
enum nl80211_iftype iftype;
+ bool ret;
+ int link;
- wdev_lock(wdev);
iftype = wdev->iftype;
/* make sure the interface is active */
if (!wdev->netdev || !netif_running(wdev->netdev))
- goto wdev_inactive_unlock;
-
- switch (iftype) {
- case NL80211_IFTYPE_AP:
- case NL80211_IFTYPE_P2P_GO:
- if (!wdev->beacon_interval)
- goto wdev_inactive_unlock;
- chandef = wdev->chandef;
- break;
- case NL80211_IFTYPE_ADHOC:
- if (!wdev->ssid_len)
- goto wdev_inactive_unlock;
- chandef = wdev->chandef;
- break;
- case NL80211_IFTYPE_STATION:
- case NL80211_IFTYPE_P2P_CLIENT:
- if (!wdev->current_bss ||
- !wdev->current_bss->pub.channel)
- goto wdev_inactive_unlock;
-
- if (!rdev->ops->get_channel ||
- rdev_get_channel(rdev, wdev, &chandef))
- cfg80211_chandef_create(&chandef,
- wdev->current_bss->pub.channel,
- NL80211_CHAN_NO_HT);
- break;
- case NL80211_IFTYPE_MONITOR:
- case NL80211_IFTYPE_AP_VLAN:
- case NL80211_IFTYPE_P2P_DEVICE:
- /* no enforcement required */
- break;
- default:
- /* others not implemented for now */
- WARN_ON(1);
- break;
- }
+ return true;
- wdev_unlock(wdev);
+ for (link = 0; link < ARRAY_SIZE(wdev->links); link++) {
+ struct ieee80211_channel *chan;
- switch (iftype) {
- case NL80211_IFTYPE_AP:
- case NL80211_IFTYPE_P2P_GO:
- case NL80211_IFTYPE_ADHOC:
- return cfg80211_reg_can_beacon_relax(wiphy, &chandef, iftype);
- case NL80211_IFTYPE_STATION:
- case NL80211_IFTYPE_P2P_CLIENT:
- return cfg80211_chandef_usable(wiphy, &chandef,
- IEEE80211_CHAN_DISABLED);
- default:
- break;
- }
+ if (!wdev->valid_links && link > 0)
+ break;
+ if (wdev->valid_links && !(wdev->valid_links & BIT(link)))
+ continue;
+ switch (iftype) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_P2P_GO:
+ if (!wdev->links[link].ap.beacon_interval)
+ continue;
+ chandef = wdev->links[link].ap.chandef;
+ break;
+ case NL80211_IFTYPE_MESH_POINT:
+ if (!wdev->u.mesh.beacon_interval)
+ continue;
+ chandef = wdev->u.mesh.chandef;
+ break;
+ case NL80211_IFTYPE_ADHOC:
+ if (!wdev->u.ibss.ssid_len)
+ continue;
+ chandef = wdev->u.ibss.chandef;
+ break;
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_P2P_CLIENT:
+ /* Maybe we could consider disabling that link only? */
+ if (!wdev->links[link].client.current_bss)
+ continue;
- return true;
+ chan = wdev->links[link].client.current_bss->pub.channel;
+ if (!chan)
+ continue;
+
+ if (!rdev->ops->get_channel ||
+ rdev_get_channel(rdev, wdev, link, &chandef))
+ cfg80211_chandef_create(&chandef, chan,
+ NL80211_CHAN_NO_HT);
+ break;
+ case NL80211_IFTYPE_MONITOR:
+ case NL80211_IFTYPE_AP_VLAN:
+ case NL80211_IFTYPE_P2P_DEVICE:
+ /* no enforcement required */
+ break;
+ case NL80211_IFTYPE_OCB:
+ if (!wdev->u.ocb.chandef.chan)
+ continue;
+ chandef = wdev->u.ocb.chandef;
+ break;
+ case NL80211_IFTYPE_NAN:
+ /* we have no info, but NAN is also pretty universal */
+ continue;
+ default:
+ /* others not implemented for now */
+ WARN_ON_ONCE(1);
+ break;
+ }
+
+ switch (iftype) {
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_P2P_GO:
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_MESH_POINT:
+ ret = cfg80211_reg_can_beacon_relax(wiphy, &chandef,
+ iftype);
+ if (!ret)
+ return ret;
+ break;
+ case NL80211_IFTYPE_STATION:
+ case NL80211_IFTYPE_P2P_CLIENT:
+ ret = cfg80211_chandef_usable(wiphy, &chandef,
+ IEEE80211_CHAN_DISABLED);
+ if (!ret)
+ return ret;
+ break;
+ default:
+ break;
+ }
+ }
-wdev_inactive_unlock:
- wdev_unlock(wdev);
return true;
}
@@ -2135,7 +2438,7 @@ static void reg_leave_invalid_chans(struct wiphy *wiphy)
struct wireless_dev *wdev;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
- ASSERT_RTNL();
+ guard(wiphy)(wiphy);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
if (!reg_wdev_chan_valid(wiphy, wdev))
@@ -2149,15 +2452,13 @@ static void reg_check_chans_work(struct work_struct *work)
pr_debug("Verifying active interfaces after reg change\n");
rtnl_lock();
- list_for_each_entry(rdev, &cfg80211_rdev_list, list)
- if (!(rdev->wiphy.regulatory_flags &
- REGULATORY_IGNORE_STALE_KICKOFF))
- reg_leave_invalid_chans(&rdev->wiphy);
+ for_each_rdev(rdev)
+ reg_leave_invalid_chans(&rdev->wiphy);
rtnl_unlock();
}
-static void reg_check_channels(void)
+void reg_check_channels(void)
{
/*
* Give usermode a chance to do something nicer (move to another
@@ -2205,7 +2506,7 @@ static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
ASSERT_RTNL();
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ for_each_rdev(rdev) {
wiphy = &rdev->wiphy;
wiphy_update_regulatory(wiphy, initiator);
}
@@ -2215,23 +2516,24 @@ static void update_all_wiphy_regulatory(enum nl80211_reg_initiator initiator)
static void handle_channel_custom(struct wiphy *wiphy,
struct ieee80211_channel *chan,
- const struct ieee80211_regdomain *regd)
+ const struct ieee80211_regdomain *regd,
+ u32 min_bw)
{
u32 bw_flags = 0;
const struct ieee80211_reg_rule *reg_rule = NULL;
const struct ieee80211_power_rule *power_rule = NULL;
- u32 bw;
+ u32 bw, center_freq_khz;
- for (bw = MHZ_TO_KHZ(20); bw >= MHZ_TO_KHZ(5); bw = bw / 2) {
- reg_rule = freq_reg_info_regd(MHZ_TO_KHZ(chan->center_freq),
- regd, bw);
+ center_freq_khz = ieee80211_channel_to_khz(chan);
+ for (bw = MHZ_TO_KHZ(20); bw >= min_bw; bw = bw / 2) {
+ reg_rule = freq_reg_info_regd(center_freq_khz, regd, bw);
if (!IS_ERR(reg_rule))
break;
}
- if (IS_ERR(reg_rule)) {
- pr_debug("Disabling freq %d MHz as custom regd has no rule that fits it\n",
- chan->center_freq);
+ if (IS_ERR_OR_NULL(reg_rule)) {
+ pr_debug("Disabling freq %d.%03d MHz as custom regd has no rule that fits it\n",
+ chan->center_freq, chan->freq_offset);
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {
chan->flags |= IEEE80211_CHAN_DISABLED;
} else {
@@ -2266,6 +2568,9 @@ static void handle_channel_custom(struct wiphy *wiphy,
chan->dfs_cac_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
}
+ if (chan->flags & IEEE80211_CHAN_PSD)
+ chan->psd = reg_rule->psd;
+
chan->max_power = chan->max_reg_power;
}
@@ -2278,14 +2583,21 @@ static void handle_band_custom(struct wiphy *wiphy,
if (!sband)
return;
+ /*
+ * We currently assume that you always want at least 20 MHz,
+ * otherwise channel 12 might get enabled if this rule is
+ * compatible to US, which permits 2402 - 2472 MHz.
+ */
for (i = 0; i < sband->n_channels; i++)
- handle_channel_custom(wiphy, &sband->channels[i], regd);
+ handle_channel_custom(wiphy, &sband->channels[i], regd,
+ MHZ_TO_KHZ(20));
}
/* Used by drivers prior to wiphy registration */
void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
const struct ieee80211_regdomain *regd)
{
+ const struct ieee80211_regdomain *new_regd, *tmp;
enum nl80211_band band;
unsigned int bands_set = 0;
@@ -2305,6 +2617,17 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
* on your device's supported bands.
*/
WARN_ON(!bands_set);
+ new_regd = reg_copy_regd(regd);
+ if (IS_ERR(new_regd))
+ return;
+
+ rtnl_lock();
+ scoped_guard(wiphy, wiphy) {
+ tmp = get_wiphy_regdom(wiphy);
+ rcu_assign_pointer(wiphy->regd, new_regd);
+ rcu_free_regdom(tmp);
+ }
+ rtnl_unlock();
}
EXPORT_SYMBOL(wiphy_apply_custom_regulatory);
@@ -2328,10 +2651,13 @@ static void reg_set_request_processed(void)
/**
* reg_process_hint_core - process core regulatory requests
- * @pending_request: a pending core regulatory request
+ * @core_request: a pending core regulatory request
*
* The wireless subsystem can use this function to process
* a regulatory request issued by the regulatory core.
+ *
+ * Returns: %REG_REQ_OK or %REG_REQ_IGNORE, indicating if the
+ * hint was processed or ignored
*/
static enum reg_request_treatment
reg_process_hint_core(struct regulatory_request *core_request)
@@ -2388,6 +2714,9 @@ __reg_process_hint_user(struct regulatory_request *user_request)
*
* The wireless subsystem can use this function to process
* a regulatory request initiated by userspace.
+ *
+ * Returns: %REG_REQ_OK or %REG_REQ_IGNORE, indicating if the
+ * hint was processed or ignored
*/
static enum reg_request_treatment
reg_process_hint_user(struct regulatory_request *user_request)
@@ -2437,12 +2766,13 @@ __reg_process_hint_driver(struct regulatory_request *driver_request)
/**
* reg_process_hint_driver - process driver regulatory requests
+ * @wiphy: the wireless device for the regulatory request
* @driver_request: a pending driver regulatory request
*
* The wireless subsystem can use this function to process
* a regulatory request issued by an 802.11 driver.
*
- * Returns one of the different reg request treatment values.
+ * Returns: one of the different reg request treatment values.
*/
static enum reg_request_treatment
reg_process_hint_driver(struct wiphy *wiphy,
@@ -2465,7 +2795,10 @@ reg_process_hint_driver(struct wiphy *wiphy,
return REG_REQ_IGNORE;
tmp = get_wiphy_regdom(wiphy);
- rcu_assign_pointer(wiphy->regd, regd);
+ ASSERT_RTNL();
+ scoped_guard(wiphy, wiphy) {
+ rcu_assign_pointer(wiphy->regd, regd);
+ }
rcu_free_regdom(tmp);
}
@@ -2537,12 +2870,13 @@ __reg_process_hint_country_ie(struct wiphy *wiphy,
/**
* reg_process_hint_country_ie - process regulatory requests from country IEs
+ * @wiphy: the wireless device for the regulatory request
* @country_ie_request: a regulatory request from a country IE
*
* The wireless subsystem can use this function to process
* a regulatory request issued by a country Information Element.
*
- * Returns one of the different reg request treatment values.
+ * Returns: one of the different reg request treatment values.
*/
static enum reg_request_treatment
reg_process_hint_country_ie(struct wiphy *wiphy,
@@ -2655,7 +2989,7 @@ static void wiphy_all_share_dfs_chan_state(struct wiphy *wiphy)
ASSERT_RTNL();
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ for_each_rdev(rdev) {
if (wiphy == &rdev->wiphy)
continue;
wiphy_share_dfs_chan_state(wiphy, &rdev->wiphy);
@@ -2721,12 +3055,10 @@ static void notify_self_managed_wiphys(struct regulatory_request *request)
struct cfg80211_registered_device *rdev;
struct wiphy *wiphy;
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ for_each_rdev(rdev) {
wiphy = &rdev->wiphy;
if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
- request->initiator == NL80211_REGDOM_SET_BY_USER &&
- request->user_reg_hint_type ==
- NL80211_USER_REG_HINT_CELL_BASE)
+ request->initiator == NL80211_REGDOM_SET_BY_USER)
reg_call_notifier(wiphy, request);
}
}
@@ -2744,7 +3076,7 @@ static void reg_process_pending_hints(void)
/* When last_request->processed becomes true this will be rescheduled */
if (lr && !lr->processed) {
- reg_process_hint(lr);
+ pr_debug("Pending regulatory request, waiting for it to be processed...\n");
return;
}
@@ -2788,7 +3120,7 @@ static void reg_process_pending_beacon_hints(void)
list_del_init(&pending_beacon->list);
/* Applies the beacon hint to current wiphys */
- list_for_each_entry(rdev, &cfg80211_rdev_list, list)
+ for_each_rdev(rdev)
wiphy_update_new_beacon(&rdev->wiphy, pending_beacon);
/* Remembers the beacon hint for new wiphys or reg changes */
@@ -2798,41 +3130,55 @@ static void reg_process_pending_beacon_hints(void)
spin_unlock_bh(&reg_pending_beacons_lock);
}
-static void reg_process_self_managed_hints(void)
+static void reg_process_self_managed_hint(struct wiphy *wiphy)
{
- struct cfg80211_registered_device *rdev;
- struct wiphy *wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
const struct ieee80211_regdomain *tmp;
const struct ieee80211_regdomain *regd;
enum nl80211_band band;
struct regulatory_request request = {};
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
- wiphy = &rdev->wiphy;
+ ASSERT_RTNL();
+ lockdep_assert_wiphy(wiphy);
- spin_lock(&reg_requests_lock);
- regd = rdev->requested_regd;
- rdev->requested_regd = NULL;
- spin_unlock(&reg_requests_lock);
+ spin_lock(&reg_requests_lock);
+ regd = rdev->requested_regd;
+ rdev->requested_regd = NULL;
+ spin_unlock(&reg_requests_lock);
- if (regd == NULL)
- continue;
+ if (!regd)
+ return;
- tmp = get_wiphy_regdom(wiphy);
- rcu_assign_pointer(wiphy->regd, regd);
- rcu_free_regdom(tmp);
+ tmp = get_wiphy_regdom(wiphy);
+ rcu_assign_pointer(wiphy->regd, regd);
+ rcu_free_regdom(tmp);
+
+ for (band = 0; band < NUM_NL80211_BANDS; band++)
+ handle_band_custom(wiphy, wiphy->bands[band], regd);
+
+ reg_process_ht_flags(wiphy);
+
+ request.wiphy_idx = get_wiphy_idx(wiphy);
+ request.alpha2[0] = regd->alpha2[0];
+ request.alpha2[1] = regd->alpha2[1];
+ request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
+
+ if (wiphy->flags & WIPHY_FLAG_NOTIFY_REGDOM_BY_DRIVER)
+ reg_call_notifier(wiphy, &request);
- for (band = 0; band < NUM_NL80211_BANDS; band++)
- handle_band_custom(wiphy, wiphy->bands[band], regd);
+ nl80211_send_wiphy_reg_change_event(&request);
+}
+
+static void reg_process_self_managed_hints(void)
+{
+ struct cfg80211_registered_device *rdev;
- reg_process_ht_flags(wiphy);
+ ASSERT_RTNL();
- request.wiphy_idx = get_wiphy_idx(wiphy);
- request.alpha2[0] = regd->alpha2[0];
- request.alpha2[1] = regd->alpha2[1];
- request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
+ for_each_rdev(rdev) {
+ guard(wiphy)(&rdev->wiphy);
- nl80211_send_wiphy_reg_change_event(&request);
+ reg_process_self_managed_hint(&rdev->wiphy);
}
reg_check_channels();
@@ -2890,6 +3236,9 @@ int regulatory_hint_user(const char *alpha2,
if (WARN_ON(!alpha2))
return -EINVAL;
+ if (!is_world_regdom(alpha2) && !is_an_alpha2(alpha2))
+ return -EINVAL;
+
request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
if (!request)
return -ENOMEM;
@@ -2908,7 +3257,7 @@ int regulatory_hint_user(const char *alpha2,
return 0;
}
-int regulatory_hint_indoor(bool is_indoor, u32 portid)
+void regulatory_hint_indoor(bool is_indoor, u32 portid)
{
spin_lock(&reg_indoor_lock);
@@ -2931,8 +3280,6 @@ int regulatory_hint_indoor(bool is_indoor, u32 portid)
if (!is_indoor)
reg_check_channels();
-
- return 0;
}
void regulatory_netlink_notify(u32 portid)
@@ -3100,7 +3447,7 @@ static void restore_custom_reg_settings(struct wiphy *wiphy)
}
/*
- * Restoring regulatory settings involves ingoring any
+ * Restoring regulatory settings involves ignoring any
* possibly stale country IE information and user regulatory
* settings if so desired, this includes any beacon hints
* learned as we could have traveled outside to another country
@@ -3111,10 +3458,10 @@ static void restore_custom_reg_settings(struct wiphy *wiphy)
* - send a user regulatory hint if applicable
*
* Device drivers that send a regulatory hint for a specific country
- * keep their own regulatory domain on wiphy->regd so that does does
+ * keep their own regulatory domain on wiphy->regd so that does
* not need to be remembered.
*/
-static void restore_regulatory_settings(bool reset_user)
+static void restore_regulatory_settings(bool reset_user, bool cached)
{
char alpha2[2];
char world_alpha2[2];
@@ -3166,22 +3513,48 @@ static void restore_regulatory_settings(bool reset_user)
world_alpha2[0] = cfg80211_world_regdom->alpha2[0];
world_alpha2[1] = cfg80211_world_regdom->alpha2[1];
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ for_each_rdev(rdev) {
if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED)
continue;
if (rdev->wiphy.regulatory_flags & REGULATORY_CUSTOM_REG)
restore_custom_reg_settings(&rdev->wiphy);
}
- regulatory_hint_core(world_alpha2);
+ if (cached && (!is_an_alpha2(alpha2) ||
+ !IS_ERR_OR_NULL(cfg80211_user_regdom))) {
+ reset_regdomains(false, cfg80211_world_regdom);
+ update_all_wiphy_regulatory(NL80211_REGDOM_SET_BY_CORE);
+ print_regdomain(get_cfg80211_regdom());
+ nl80211_send_reg_change_event(&core_request_world);
+ reg_set_request_processed();
- /*
- * This restores the ieee80211_regdom module parameter
- * preference or the last user requested regulatory
- * settings, user regulatory settings takes precedence.
- */
- if (is_an_alpha2(alpha2))
- regulatory_hint_user(alpha2, NL80211_USER_REG_HINT_USER);
+ if (is_an_alpha2(alpha2) &&
+ !regulatory_hint_user(alpha2, NL80211_USER_REG_HINT_USER)) {
+ struct regulatory_request *ureq;
+
+ spin_lock(&reg_requests_lock);
+ ureq = list_last_entry(&reg_requests_list,
+ struct regulatory_request,
+ list);
+ list_del(&ureq->list);
+ spin_unlock(&reg_requests_lock);
+
+ notify_self_managed_wiphys(ureq);
+ reg_update_last_request(ureq);
+ set_regdom(reg_copy_regd(cfg80211_user_regdom),
+ REGD_SOURCE_CACHED);
+ }
+ } else {
+ regulatory_hint_core(world_alpha2);
+
+ /*
+ * This restores the ieee80211_regdom module parameter
+ * preference or the last user requested regulatory
+ * settings, user regulatory settings takes precedence.
+ */
+ if (is_an_alpha2(alpha2))
+ regulatory_hint_user(alpha2, NL80211_USER_REG_HINT_USER);
+ }
spin_lock(&reg_requests_lock);
list_splice_tail_init(&tmp_reg_req_list, &reg_requests_list);
@@ -3197,14 +3570,12 @@ static bool is_wiphy_all_set_reg_flag(enum ieee80211_regulatory_flags flag)
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ for_each_rdev(rdev) {
+ guard(wiphy)(&rdev->wiphy);
+
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
- wdev_lock(wdev);
- if (!(wdev->wiphy->regulatory_flags & flag)) {
- wdev_unlock(wdev);
+ if (!(wdev->wiphy->regulatory_flags & flag))
return false;
- }
- wdev_unlock(wdev);
}
}
@@ -3241,7 +3612,7 @@ void regulatory_hint_disconnect(void)
}
pr_debug("All devices are disconnected, going to restore regulatory settings\n");
- restore_regulatory_settings(false);
+ restore_regulatory_settings(false, true);
}
static bool freq_is_chan_12_13_14(u32 freq)
@@ -3258,15 +3629,15 @@ static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan)
struct reg_beacon *pending_beacon;
list_for_each_entry(pending_beacon, &reg_pending_beacons, list)
- if (beacon_chan->center_freq ==
- pending_beacon->chan.center_freq)
+ if (ieee80211_channel_equal(beacon_chan,
+ &pending_beacon->chan))
return true;
return false;
}
-int regulatory_hint_found_beacon(struct wiphy *wiphy,
- struct ieee80211_channel *beacon_chan,
- gfp_t gfp)
+void regulatory_hint_found_beacon(struct wiphy *wiphy,
+ struct ieee80211_channel *beacon_chan,
+ gfp_t gfp)
{
struct reg_beacon *reg_beacon;
bool processing;
@@ -3275,22 +3646,23 @@ int regulatory_hint_found_beacon(struct wiphy *wiphy,
beacon_chan->flags & IEEE80211_CHAN_RADAR ||
(beacon_chan->band == NL80211_BAND_2GHZ &&
!freq_is_chan_12_13_14(beacon_chan->center_freq)))
- return 0;
+ return;
spin_lock_bh(&reg_pending_beacons_lock);
processing = pending_reg_beacon(beacon_chan);
spin_unlock_bh(&reg_pending_beacons_lock);
if (processing)
- return 0;
+ return;
reg_beacon = kzalloc(sizeof(struct reg_beacon), gfp);
if (!reg_beacon)
- return -ENOMEM;
+ return;
- pr_debug("Found new beacon on frequency: %d MHz (Ch %d) on %s\n",
- beacon_chan->center_freq,
- ieee80211_frequency_to_channel(beacon_chan->center_freq),
+ pr_debug("Found new beacon on frequency: %d.%03d MHz (Ch %d) on %s\n",
+ beacon_chan->center_freq, beacon_chan->freq_offset,
+ ieee80211_freq_khz_to_channel(
+ ieee80211_channel_to_khz(beacon_chan)),
wiphy_name(wiphy));
memcpy(&reg_beacon->chan, beacon_chan,
@@ -3305,8 +3677,6 @@ int regulatory_hint_found_beacon(struct wiphy *wiphy,
spin_unlock_bh(&reg_pending_beacons_lock);
schedule_work(&reg_work);
-
- return 0;
}
static void print_rd_rules(const struct ieee80211_regdomain *rd)
@@ -3325,7 +3695,7 @@ static void print_rd_rules(const struct ieee80211_regdomain *rd)
power_rule = &reg_rule->power_rule;
if (reg_rule->flags & NL80211_RRF_AUTO_BW)
- snprintf(bw, sizeof(bw), "%d KHz, %d KHz AUTO",
+ snprintf(bw, sizeof(bw), "%d KHz, %u KHz AUTO",
freq_range->max_bandwidth_khz,
reg_get_max_bandwidth(rd, reg_rule));
else
@@ -3460,7 +3830,7 @@ static int reg_set_rd_driver(const struct ieee80211_regdomain *rd,
{
const struct ieee80211_regdomain *regd;
const struct ieee80211_regdomain *intersected_rd = NULL;
- const struct ieee80211_regdomain *tmp;
+ const struct ieee80211_regdomain *tmp = NULL;
struct wiphy *request_wiphy;
if (is_world_regdom(rd->alpha2))
@@ -3481,14 +3851,19 @@ static int reg_set_rd_driver(const struct ieee80211_regdomain *rd,
return -ENODEV;
if (!driver_request->intersect) {
- if (request_wiphy->regd)
- return -EALREADY;
+ ASSERT_RTNL();
+ scoped_guard(wiphy, request_wiphy) {
+ if (request_wiphy->regd)
+ tmp = get_wiphy_regdom(request_wiphy);
- regd = reg_copy_regd(rd);
- if (IS_ERR(regd))
- return PTR_ERR(regd);
+ regd = reg_copy_regd(rd);
+ if (IS_ERR(regd))
+ return PTR_ERR(regd);
+
+ rcu_assign_pointer(request_wiphy->regd, regd);
+ rcu_free_regdom(tmp);
+ }
- rcu_assign_pointer(request_wiphy->regd, regd);
reset_regdomains(false, rd);
return 0;
}
@@ -3558,6 +3933,9 @@ int set_regdom(const struct ieee80211_regdomain *rd,
bool user_reset = false;
int r;
+ if (IS_ERR_OR_NULL(rd))
+ return -ENODATA;
+
if (!reg_is_valid_request(rd->alpha2)) {
kfree(rd);
return -EINVAL;
@@ -3574,6 +3952,7 @@ int set_regdom(const struct ieee80211_regdomain *rd,
r = reg_set_rd_core(rd);
break;
case NL80211_REGDOM_SET_BY_USER:
+ cfg80211_save_user_regdom(rd);
r = reg_set_rd_user(rd, lr);
user_reset = true;
break;
@@ -3596,7 +3975,7 @@ int set_regdom(const struct ieee80211_regdomain *rd,
break;
default:
/* Back to world regulatory in case of errors */
- restore_regulatory_settings(user_reset);
+ restore_regulatory_settings(user_reset, false);
}
kfree(rd);
@@ -3633,7 +4012,9 @@ static int __regulatory_set_wiphy_regd(struct wiphy *wiphy,
"wiphy should have REGULATORY_WIPHY_SELF_MANAGED\n"))
return -EPERM;
- if (WARN(!is_valid_rd(rd), "Invalid regulatory domain detected\n")) {
+ if (WARN(!is_valid_rd(rd),
+ "Invalid regulatory domain detected: %c%c\n",
+ rd->alpha2[0], rd->alpha2[1])) {
print_regdomain_info(rd);
return -EINVAL;
}
@@ -3666,8 +4047,8 @@ int regulatory_set_wiphy_regd(struct wiphy *wiphy,
}
EXPORT_SYMBOL(regulatory_set_wiphy_regd);
-int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
- struct ieee80211_regdomain *rd)
+int regulatory_set_wiphy_regd_sync(struct wiphy *wiphy,
+ struct ieee80211_regdomain *rd)
{
int ret;
@@ -3678,10 +4059,11 @@ int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
return ret;
/* process the request immediately */
- reg_process_self_managed_hints();
+ reg_process_self_managed_hint(wiphy);
+ reg_check_channels();
return 0;
}
-EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl);
+EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync);
void wiphy_regulatory_register(struct wiphy *wiphy)
{
@@ -3695,10 +4077,9 @@ void wiphy_regulatory_register(struct wiphy *wiphy)
/*
* The last request may have been received before this
* registration call. Call the driver notifier if
- * initiator is USER and user type is CELL_BASE.
+ * initiator is USER.
*/
- if (lr->initiator == NL80211_REGDOM_SET_BY_USER &&
- lr->user_reg_hint_type == NL80211_USER_REG_HINT_CELL_BASE)
+ if (lr->initiator == NL80211_REGDOM_SET_BY_USER)
reg_call_notifier(wiphy, lr);
}
@@ -3707,6 +4088,7 @@ void wiphy_regulatory_register(struct wiphy *wiphy)
wiphy_update_regulatory(wiphy, lr->initiator);
wiphy_all_share_dfs_chan_state(wiphy);
+ reg_process_self_managed_hints();
}
void wiphy_regulatory_deregister(struct wiphy *wiphy)
@@ -3733,8 +4115,9 @@ void wiphy_regulatory_deregister(struct wiphy *wiphy)
}
/*
- * See http://www.fcc.gov/document/5-ghz-unlicensed-spectrum-unii, for
- * UNII band definitions
+ * See FCC notices for UNII band definitions
+ * 5GHz: https://www.fcc.gov/document/5-ghz-unlicensed-spectrum-unii
+ * 6GHz: https://www.fcc.gov/document/fcc-proposes-more-spectrum-unlicensed-use-0
*/
int cfg80211_get_unii(int freq)
{
@@ -3758,6 +4141,22 @@ int cfg80211_get_unii(int freq)
if (freq > 5725 && freq <= 5825)
return 4;
+ /* UNII-5 */
+ if (freq > 5925 && freq <= 6425)
+ return 5;
+
+ /* UNII-6 */
+ if (freq > 6425 && freq <= 6525)
+ return 6;
+
+ /* UNII-7 */
+ if (freq > 6525 && freq <= 6875)
+ return 7;
+
+ /* UNII-8 */
+ if (freq > 6875 && freq <= 7125)
+ return 8;
+
return -EINVAL;
}
@@ -3793,6 +4192,40 @@ bool regulatory_pre_cac_allowed(struct wiphy *wiphy)
return pre_cac_allowed;
}
+EXPORT_SYMBOL(regulatory_pre_cac_allowed);
+
+static void cfg80211_check_and_end_cac(struct cfg80211_registered_device *rdev)
+{
+ struct wireless_dev *wdev;
+ unsigned int link_id;
+
+ guard(wiphy)(&rdev->wiphy);
+
+ /* If we finished CAC or received radar, we should end any
+ * CAC running on the same channels.
+ * the check !cfg80211_chandef_dfs_usable contain 2 options:
+ * either all channels are available - those the CAC_FINISHED
+ * event has effected another wdev state, or there is a channel
+ * in unavailable state in wdev chandef - those the RADAR_DETECTED
+ * event has effected another wdev state.
+ * In both cases we should end the CAC on the wdev.
+ */
+ list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
+ struct cfg80211_chan_def *chandef;
+
+ for_each_valid_link(wdev, link_id) {
+ if (!wdev->links[link_id].cac_started)
+ continue;
+
+ chandef = wdev_chandef(wdev, link_id);
+ if (!chandef)
+ continue;
+
+ if (!cfg80211_chandef_dfs_usable(&rdev->wiphy, chandef))
+ rdev_end_cac(rdev, wdev->netdev, link_id);
+ }
+ }
+}
void regulatory_propagate_dfs_state(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
@@ -3806,7 +4239,7 @@ void regulatory_propagate_dfs_state(struct wiphy *wiphy,
if (WARN_ON(!cfg80211_chandef_valid(chandef)))
return;
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ for_each_rdev(rdev) {
if (wiphy == &rdev->wiphy)
continue;
@@ -3820,8 +4253,10 @@ void regulatory_propagate_dfs_state(struct wiphy *wiphy,
cfg80211_set_dfs_state(&rdev->wiphy, chandef, dfs_state);
if (event == NL80211_RADAR_DETECTED ||
- event == NL80211_RADAR_CAC_FINISHED)
+ event == NL80211_RADAR_CAC_FINISHED) {
cfg80211_sched_dfs_chan_update(rdev);
+ cfg80211_check_and_end_cac(rdev);
+ }
nl80211_radar_notify(rdev, chandef, event, NULL, GFP_KERNEL);
}
@@ -3837,18 +4272,20 @@ static int __init regulatory_init_db(void)
* in that case, don't try to do any further work here as
* it's doomed to lead to crashes.
*/
- if (IS_ERR_OR_NULL(reg_pdev))
+ if (!reg_fdev)
return -EINVAL;
err = load_builtin_regdb_keys();
- if (err)
+ if (err) {
+ faux_device_destroy(reg_fdev);
return err;
+ }
/* We always try to get an update for the static regdomain */
err = regulatory_hint_core(cfg80211_world_regdom->alpha2);
if (err) {
if (err == -ENOMEM) {
- platform_device_unregister(reg_pdev);
+ faux_device_destroy(reg_fdev);
return err;
}
/*
@@ -3877,13 +4314,9 @@ late_initcall(regulatory_init_db);
int __init regulatory_init(void)
{
- reg_pdev = platform_device_register_simple("regulatory", 0, NULL, 0);
- if (IS_ERR(reg_pdev))
- return PTR_ERR(reg_pdev);
-
- spin_lock_init(&reg_requests_lock);
- spin_lock_init(&reg_pending_beacons_lock);
- spin_lock_init(&reg_indoor_lock);
+ reg_fdev = faux_device_create("regulatory", NULL, NULL);
+ if (!reg_fdev)
+ return -ENODEV;
rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom);
@@ -3911,9 +4344,9 @@ void regulatory_exit(void)
reset_regdomains(true, NULL);
rtnl_unlock();
- dev_set_uevent_suppress(&reg_pdev->dev, true);
+ dev_set_uevent_suppress(&reg_fdev->dev, true);
- platform_device_unregister(reg_pdev);
+ faux_device_destroy(reg_fdev);
list_for_each_entry_safe(reg_beacon, btmp, &reg_pending_beacons, list) {
list_del(&reg_beacon->list);
@@ -3932,6 +4365,8 @@ void regulatory_exit(void)
if (!IS_ERR_OR_NULL(regdb))
kfree(regdb);
+ if (!IS_ERR_OR_NULL(cfg80211_user_regdom))
+ kfree(cfg80211_user_regdom);
free_regdb_keyring();
}
generated by cgit (git 2.34.1) at 2025-12-24 22:03:13 +0000