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wifi: cfg80211: Schedule regulatory check on BSS STA channel change

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Due to different relaxation policies it may be needed to re-check
channels after a BSS station interface is disconnected or performed a
channel switch.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20231220133549.1f2f8475bcf1.I1879d259d8d756159c8060f61f4bce172e6d323e@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Andrei Otcheretianski 2023-12-20 13:41:35 +02:00 committed by Johannes Berg
parent 41a313d875
commit 9be61558de
5 changed files with 33 additions and 1 deletions
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10
include/net/cfg80211.h
View file

@ -9391,6 +9391,16 @@ bool cfg80211_valid_disable_subchannel_bitmap(u16 *bitmap,
*/
void cfg80211_links_removed(struct net_device *dev, u16 link_mask);
/**
* cfg80211_schedule_channels_check - schedule regulatory check if needed
* @wdev: the wireless device to check
*
* In case the device supports NO_IR or DFS relaxations, schedule regulatory
* channels check, as previous concurrent operation conditions may not
* hold anymore.
*/
void cfg80211_schedule_channels_check(struct wireless_dev *wdev);
#ifdef CONFIG_CFG80211_DEBUGFS
/**
* wiphy_locked_debugfs_read - do a locked read in debugfs

15
net/wireless/nl80211.c
View file

@ -19474,6 +19474,7 @@ void cfg80211_ch_switch_notify(struct net_device *dev,
break;
}
cfg80211_schedule_channels_check(wdev);
cfg80211_sched_dfs_chan_update(rdev);
nl80211_ch_switch_notify(rdev, dev, link_id, chandef, GFP_KERNEL,
@ -20231,6 +20232,20 @@ void cfg80211_update_owe_info_event(struct net_device *netdev,
}
EXPORT_SYMBOL(cfg80211_update_owe_info_event);
void cfg80211_schedule_channels_check(struct wireless_dev *wdev)
{
struct wiphy *wiphy = wdev->wiphy;
/* Schedule channels check if NO_IR or DFS relaxations are supported */
if (wdev->iftype == NL80211_IFTYPE_STATION &&
(wiphy_ext_feature_isset(wiphy,
NL80211_EXT_FEATURE_DFS_CONCURRENT) ||
(IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) &&
wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR)))
reg_check_channels();
}
EXPORT_SYMBOL(cfg80211_schedule_channels_check);
/* initialisation/exit functions */
int __init nl80211_init(void)

2
net/wireless/reg.c
View file

@ -2480,7 +2480,7 @@ static void reg_check_chans_work(struct work_struct *work)
rtnl_unlock();
}
static void reg_check_channels(void)
void reg_check_channels(void)
{
/*
* Give usermode a chance to do something nicer (move to another

5
net/wireless/reg.h
View file

@ -181,6 +181,11 @@ bool reg_dfs_domain_same(struct wiphy *wiphy1, struct wiphy *wiphy2);
*/
int reg_reload_regdb(void);
/**
* reg_check_channels - schedule regulatory enforcement
*/
void reg_check_channels(void);
extern const u8 shipped_regdb_certs[];
extern unsigned int shipped_regdb_certs_len;
extern const u8 extra_regdb_certs[];

2
net/wireless/sme.c
View file

@ -1394,6 +1394,8 @@ void __cfg80211_disconnected(struct net_device *dev, const u8 *ie,
#endif
schedule_work(&cfg80211_disconnect_work);
cfg80211_schedule_channels_check(wdev);
}
void cfg80211_disconnected(struct net_device *dev, u16 reason,