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.c168
1 files changed, 69 insertions, 99 deletions
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 1df65a5a44f7..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 - 2024 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
@@ -53,7 +53,7 @@
#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>
@@ -105,7 +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,
@@ -407,7 +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)
@@ -582,7 +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;
@@ -778,7 +779,7 @@ 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,
@@ -1060,7 +1061,7 @@ static int query_regdb_file(const char *alpha2)
return -ENOMEM;
err = request_firmware_nowait(THIS_MODULE, true, "regulatory.db",
- &reg_pdev->dev, GFP_KERNEL,
+ &reg_fdev->dev, GFP_KERNEL,
(void *)alpha2, regdb_fw_cb);
if (err)
kfree(alpha2);
@@ -1076,7 +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;
@@ -1602,6 +1603,8 @@ static u32 map_regdom_flags(u32 rd_flags)
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;
}
@@ -1704,6 +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,
@@ -1714,59 +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(320))
- bw_flags |= IEEE80211_CHAN_NO_320MHZ;
- }
+ 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;
}
@@ -2465,11 +2438,11 @@ static void reg_leave_invalid_chans(struct wiphy *wiphy)
struct wireless_dev *wdev;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
- wiphy_lock(wiphy);
+ guard(wiphy)(wiphy);
+
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
if (!reg_wdev_chan_valid(wiphy, wdev))
cfg80211_leave(rdev, wdev);
- wiphy_unlock(wiphy);
}
static void reg_check_chans_work(struct work_struct *work)
@@ -2649,13 +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);
@@ -2825,9 +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);
}
@@ -3205,9 +3176,9 @@ static void reg_process_self_managed_hints(void)
ASSERT_RTNL();
for_each_rdev(rdev) {
- wiphy_lock(&rdev->wiphy);
+ guard(wiphy)(&rdev->wiphy);
+
reg_process_self_managed_hint(&rdev->wiphy);
- wiphy_unlock(&rdev->wiphy);
}
reg_check_channels();
@@ -3600,14 +3571,12 @@ static bool is_wiphy_all_set_reg_flag(enum ieee80211_regulatory_flags flag)
struct wireless_dev *wdev;
for_each_rdev(rdev) {
- wiphy_lock(&rdev->wiphy);
+ guard(wiphy)(&rdev->wiphy);
+
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
- if (!(wdev->wiphy->regulatory_flags & flag)) {
- wiphy_unlock(&rdev->wiphy);
+ if (!(wdev->wiphy->regulatory_flags & flag))
return false;
- }
}
- wiphy_unlock(&rdev->wiphy);
}
return true;
@@ -3883,19 +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)
- tmp = get_wiphy_regdom(request_wiphy);
-
- regd = reg_copy_regd(rd);
- if (IS_ERR(regd)) {
- wiphy_unlock(request_wiphy);
- return PTR_ERR(regd);
+ 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);
+
+ rcu_assign_pointer(request_wiphy->regd, regd);
+ rcu_free_regdom(tmp);
}
- rcu_assign_pointer(request_wiphy->regd, regd);
- rcu_free_regdom(tmp);
- wiphy_unlock(request_wiphy);
reset_regdomains(false, rd);
return 0;
}
@@ -4231,6 +4199,8 @@ 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:
@@ -4302,12 +4272,12 @@ 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) {
- platform_device_unregister(reg_pdev);
+ faux_device_destroy(reg_fdev);
return err;
}
@@ -4315,7 +4285,7 @@ static int __init regulatory_init_db(void)
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;
}
/*
@@ -4344,9 +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);
@@ -4374,9 +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 2025-12-24 20:54:18 +0000