summaryrefslogtreecommitdiff
path: root/net/wireless/reg.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/wireless/reg.c')
-rw-r--r--net/wireless/reg.c510
1 files changed, 264 insertions, 246 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index ec25924a1c26..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 - 2021 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,
@@ -405,7 +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)
@@ -580,7 +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;
@@ -737,51 +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;
-
- 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;
- }
+#include <keys/asymmetric-type.h>
- 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)
{
@@ -797,22 +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,
@@ -1078,8 +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)
@@ -1089,9 +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)
@@ -1102,7 +1077,7 @@ int reg_reload_regdb(void)
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;
@@ -1173,7 +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 &&
@@ -1238,6 +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)
@@ -1309,24 +1286,23 @@ static bool is_valid_rd(const struct ieee80211_regdomain *rd)
* 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 ?
- 20 * 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
}
/*
@@ -1518,6 +1494,8 @@ 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,
@@ -1611,6 +1589,22 @@ static u32 map_regdom_flags(u32 rd_flags)
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;
}
@@ -1713,6 +1707,16 @@ static uint32_t reg_rule_to_chan_bw_flags(const struct ieee80211_regdomain *regd
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,
center_freq_khz,
@@ -1723,57 +1727,19 @@ static uint32_t reg_rule_to_chan_bw_flags(const struct ieee80211_regdomain *regd
MHZ_TO_KHZ(20)))
bw_flags |= IEEE80211_CHAN_NO_20MHZ;
- if (is_s1g) {
- /* S1G is strict about non overlapping channels. We can
- * calculate which bandwidth is allowed per channel by finding
- * the largest bandwidth which cleanly divides the freq_range.
- */
- int edge_offset;
- int ch_bw = max_bandwidth_khz;
-
- while (ch_bw) {
- edge_offset = (center_freq_khz - ch_bw / 2) -
- freq_range->start_freq_khz;
- if (edge_offset % ch_bw == 0) {
- switch (KHZ_TO_MHZ(ch_bw)) {
- case 1:
- bw_flags |= IEEE80211_CHAN_1MHZ;
- break;
- case 2:
- bw_flags |= IEEE80211_CHAN_2MHZ;
- break;
- case 4:
- bw_flags |= IEEE80211_CHAN_4MHZ;
- break;
- case 8:
- bw_flags |= IEEE80211_CHAN_8MHZ;
- break;
- case 16:
- bw_flags |= IEEE80211_CHAN_16MHZ;
- break;
- default:
- /* If we got here, no bandwidths fit on
- * this frequency, ie. band edge.
- */
- bw_flags |= IEEE80211_CHAN_DISABLED;
- break;
- }
- break;
- }
- ch_bw /= 2;
- }
- } else {
- if (max_bandwidth_khz < MHZ_TO_KHZ(10))
- bw_flags |= IEEE80211_CHAN_NO_10MHZ;
- if (max_bandwidth_khz < MHZ_TO_KHZ(20))
- bw_flags |= IEEE80211_CHAN_NO_20MHZ;
- if (max_bandwidth_khz < MHZ_TO_KHZ(40))
- bw_flags |= IEEE80211_CHAN_NO_HT40;
- if (max_bandwidth_khz < MHZ_TO_KHZ(80))
- 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(10))
+ bw_flags |= IEEE80211_CHAN_NO_10MHZ;
+ if (max_bandwidth_khz < MHZ_TO_KHZ(20))
+ bw_flags |= IEEE80211_CHAN_NO_20MHZ;
+ if (max_bandwidth_khz < MHZ_TO_KHZ(40))
+ bw_flags |= IEEE80211_CHAN_NO_HT40;
+ if (max_bandwidth_khz < MHZ_TO_KHZ(80))
+ 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;
}
@@ -1815,6 +1781,9 @@ static void handle_channel_single_rule(struct wiphy *wiphy,
chan->dfs_cac_ms = reg_rule->dfs_cac_ms;
}
+ if (chan->flags & IEEE80211_CHAN_PSD)
+ chan->psd = reg_rule->psd;
+
return;
}
@@ -1835,6 +1804,9 @@ static void handle_channel_single_rule(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
@@ -1904,6 +1876,12 @@ static void handle_channel_adjacent_rules(struct wiphy *wiphy,
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;
}
@@ -2171,6 +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)
{
@@ -2178,6 +2163,7 @@ 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];
@@ -2203,8 +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);
+ }
}
/*
@@ -2347,88 +2336,101 @@ 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_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:
- case NL80211_IFTYPE_MESH_POINT:
- 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;
+
+ for (link = 0; link < ARRAY_SIZE(wdev->links); link++) {
+ struct ieee80211_channel *chan;
+
+ 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;
- wdev_unlock(wdev);
+ chan = wdev->links[link].client.current_bss->pub.channel;
+ if (!chan)
+ continue;
- switch (iftype) {
- case NL80211_IFTYPE_AP:
- case NL80211_IFTYPE_P2P_GO:
- case NL80211_IFTYPE_ADHOC:
- case NL80211_IFTYPE_MESH_POINT:
- wiphy_lock(wiphy);
- ret = cfg80211_reg_can_beacon_relax(wiphy, &chandef, iftype);
- wiphy_unlock(wiphy);
+ 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;
+ }
- return ret;
- case NL80211_IFTYPE_STATION:
- case NL80211_IFTYPE_P2P_CLIENT:
- return cfg80211_chandef_usable(wiphy, &chandef,
- IEEE80211_CHAN_DISABLED);
- default:
- 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;
+ }
}
return true;
-
-wdev_inactive_unlock:
- wdev_unlock(wdev);
- return true;
}
static void reg_leave_invalid_chans(struct wiphy *wiphy)
@@ -2436,7 +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))
@@ -2450,15 +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
@@ -2506,7 +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);
}
@@ -2568,6 +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;
}
@@ -2619,13 +2622,11 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
return;
rtnl_lock();
- wiphy_lock(wiphy);
-
- tmp = get_wiphy_regdom(wiphy);
- rcu_assign_pointer(wiphy->regd, new_regd);
- rcu_free_regdom(tmp);
-
- wiphy_unlock(wiphy);
+ 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);
@@ -2654,6 +2655,9 @@ static void reg_set_request_processed(void)
*
* 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)
@@ -2710,6 +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)
@@ -2765,7 +2772,7 @@ __reg_process_hint_driver(struct regulatory_request *driver_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,
@@ -2789,9 +2796,9 @@ reg_process_hint_driver(struct wiphy *wiphy,
tmp = get_wiphy_regdom(wiphy);
ASSERT_RTNL();
- wiphy_lock(wiphy);
- rcu_assign_pointer(wiphy->regd, regd);
- wiphy_unlock(wiphy);
+ scoped_guard(wiphy, wiphy) {
+ rcu_assign_pointer(wiphy->regd, regd);
+ }
rcu_free_regdom(tmp);
}
@@ -2869,7 +2876,7 @@ __reg_process_hint_country_ie(struct wiphy *wiphy,
* 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,
@@ -2982,7 +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);
@@ -3048,7 +3055,7 @@ 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)
@@ -3113,7 +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 */
@@ -3156,6 +3163,9 @@ static void reg_process_self_managed_hint(struct wiphy *wiphy)
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);
+
nl80211_send_wiphy_reg_change_event(&request);
}
@@ -3165,10 +3175,10 @@ static void reg_process_self_managed_hints(void)
ASSERT_RTNL();
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
- wiphy_lock(&rdev->wiphy);
+ for_each_rdev(rdev) {
+ guard(wiphy)(&rdev->wiphy);
+
reg_process_self_managed_hint(&rdev->wiphy);
- wiphy_unlock(&rdev->wiphy);
}
reg_check_channels();
@@ -3247,7 +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);
@@ -3270,8 +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)
@@ -3505,7 +3513,7 @@ static void restore_regulatory_settings(bool reset_user, bool cached)
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)
@@ -3562,14 +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);
}
}
@@ -3629,9 +3635,9 @@ static bool pending_reg_beacon(struct ieee80211_channel *beacon_chan)
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;
@@ -3640,18 +3646,18 @@ 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.%03d MHz (Ch %d) on %s\n",
beacon_chan->center_freq, beacon_chan->freq_offset,
@@ -3671,8 +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)
@@ -3826,7 +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))
@@ -3848,20 +3852,18 @@ static int reg_set_rd_driver(const struct ieee80211_regdomain *rd,
if (!driver_request->intersect) {
ASSERT_RTNL();
- wiphy_lock(request_wiphy);
- if (request_wiphy->regd) {
- wiphy_unlock(request_wiphy);
- return -EALREADY;
- }
+ 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)) {
- wiphy_unlock(request_wiphy);
- return PTR_ERR(regd);
+ rcu_assign_pointer(request_wiphy->regd, regd);
+ rcu_free_regdom(tmp);
}
- rcu_assign_pointer(request_wiphy->regd, regd);
- wiphy_unlock(request_wiphy);
reset_regdomains(false, rd);
return 0;
}
@@ -4195,6 +4197,10 @@ 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:
@@ -4205,9 +4211,19 @@ static void cfg80211_check_and_end_cac(struct cfg80211_registered_device *rdev)
* In both cases we should end the CAC on the wdev.
*/
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
- if (wdev->cac_started &&
- !cfg80211_chandef_dfs_usable(&rdev->wiphy, &wdev->chandef))
- rdev_end_cac(rdev, wdev->netdev);
+ 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);
+ }
}
}
@@ -4223,7 +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;
@@ -4256,18 +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;
}
/*
@@ -4296,9 +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);
+ reg_fdev = faux_device_create("regulatory", NULL, NULL);
+ if (!reg_fdev)
+ return -ENODEV;
rcu_assign_pointer(cfg80211_regdomain, cfg80211_world_regdom);
@@ -4326,9 +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);
generated by cgit (git 2.34.1) at 2025-12-25 15:03:38 +0000