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Just a small update:

Browse Source 
* fix the deadlock on rfkill/wireless removal that a few
    people reported
  * fix an uninitialized variable
  * update wiki URLs
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Merge tag 'mac80211-for-davem-2020-06-08' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Just a small update:
 * fix the deadlock on rfkill/wireless removal that a few
   people reported
 * fix an uninitialized variable
 * update wiki URLs
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2020-06-08 17:14:19 -07:00
commit 6b1ad5a3ad
10 changed files with 38 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/networking/mac80211-injection.rst
View File

@ -101,6 +101,6 @@ interface), along the following lines:::
You can also find a link to a complete inject application here:
http://wireless.kernel.org/en/users/Documentation/packetspammer
https://wireless.wiki.kernel.org/en/users/Documentation/packetspammer
Andy Green <andy@warmcat.com>

6
Documentation/networking/regulatory.rst
View File

@ -9,7 +9,7 @@ regulatory infrastructure works.
More up to date information can be obtained at the project's web page:
http://wireless.kernel.org/en/developers/Regulatory
https://wireless.wiki.kernel.org/en/developers/Regulatory
Keeping regulatory domains in userspace
---------------------------------------
@ -37,7 +37,7 @@ expected regulatory domains will be respected by the kernel.
A currently available userspace agent which can accomplish this
is CRDA - central regulatory domain agent. Its documented here:
http://wireless.kernel.org/en/developers/Regulatory/CRDA
https://wireless.wiki.kernel.org/en/developers/Regulatory/CRDA
Essentially the kernel will send a udev event when it knows
it needs a new regulatory domain. A udev rule can be put in place
@ -58,7 +58,7 @@ Who asks for regulatory domains?
Users can use iw:
http://wireless.kernel.org/en/users/Documentation/iw
https://wireless.wiki.kernel.org/en/users/Documentation/iw
An example::

5
include/net/cfg80211.h
View File

@ -5075,7 +5075,8 @@ struct cfg80211_cqm_config;
* by cfg80211 on change_interface
* @mgmt_registrations: list of registrations for management frames
* @mgmt_registrations_lock: lock for the list
* @mgmt_registrations_update_wk: update work to defer from atomic context
* @mgmt_registrations_need_update: mgmt registrations were updated,
* need to propagate the update to the driver
* @mtx: mutex used to lock data in this struct, may be used by drivers
* and some API functions require it held
* @beacon_interval: beacon interval used on this device for transmitting
@ -5121,7 +5122,7 @@ struct wireless_dev {
struct list_head mgmt_registrations;
spinlock_t mgmt_registrations_lock;
struct work_struct mgmt_registrations_update_wk;
u8 mgmt_registrations_need_update:1;
struct mutex mtx;

2
include/uapi/linux/nl80211.h
View File

@ -794,7 +794,7 @@
* various triggers. These triggers can be configured through this
* command with the %NL80211_ATTR_WOWLAN_TRIGGERS attribute. For
* more background information, see
* http://wireless.kernel.org/en/users/Documentation/WoWLAN.
* https://wireless.wiki.kernel.org/en/users/Documentation/WoWLAN.
* The @NL80211_CMD_SET_WOWLAN command can also be used as a notification
* from the driver reporting the wakeup reason. In this case, the
* @NL80211_ATTR_WOWLAN_TRIGGERS attribute will contain the reason

2
net/mac80211/mlme.c
View File

@ -167,6 +167,8 @@ ieee80211_determine_chantype(struct ieee80211_sub_if_data *sdata,
ret = IEEE80211_STA_DISABLE_HT |
IEEE80211_STA_DISABLE_VHT |
IEEE80211_STA_DISABLE_HE;
else
ret = 0;
vht_chandef = *chandef;
goto out;
}

2
net/mac80211/rx.c
View File

@ -4694,7 +4694,7 @@ void ieee80211_rx_napi(struct ieee80211_hw *hw, struct ieee80211_sta *pubsta,
* rate_idx is MCS index, which can be [0-76]
* as documented on:
*
* http://wireless.kernel.org/en/developers/Documentation/ieee80211/802.11n
* https://wireless.wiki.kernel.org/en/developers/Documentation/ieee80211/802.11n
*
* Anything else would be some sort of driver or
* hardware error. The driver should catch hardware

2
net/wireless/Kconfig
View File

@ -31,7 +31,7 @@ config CFG80211
For more information refer to documentation on the wireless wiki:
http://wireless.kernel.org/en/developers/Documentation/cfg80211
https://wireless.wiki.kernel.org/en/developers/Documentation/cfg80211
When built as a module it will be called cfg80211.

6
net/wireless/core.c
View File

@ -497,6 +497,8 @@ use_default_name:
INIT_WORK(&rdev->propagate_radar_detect_wk,
cfg80211_propagate_radar_detect_wk);
INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk);
INIT_WORK(&rdev->mgmt_registrations_update_wk,
cfg80211_mgmt_registrations_update_wk);
#ifdef CONFIG_CFG80211_DEFAULT_PS
rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
@ -1047,6 +1049,7 @@ void wiphy_unregister(struct wiphy *wiphy)
flush_work(&rdev->sched_scan_stop_wk);
flush_work(&rdev->propagate_radar_detect_wk);
flush_work(&rdev->propagate_cac_done_wk);
flush_work(&rdev->mgmt_registrations_update_wk);
#ifdef CONFIG_PM
if (rdev->wiphy.wowlan_config && rdev->ops->set_wakeup)
@ -1108,7 +1111,6 @@ static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync)
rdev->devlist_generation++;
cfg80211_mlme_purge_registrations(wdev);
flush_work(&wdev->mgmt_registrations_update_wk);
switch (wdev->iftype) {
case NL80211_IFTYPE_P2P_DEVICE:
@ -1253,8 +1255,6 @@ void cfg80211_init_wdev(struct cfg80211_registered_device *rdev,
spin_lock_init(&wdev->event_lock);
INIT_LIST_HEAD(&wdev->mgmt_registrations);
spin_lock_init(&wdev->mgmt_registrations_lock);
INIT_WORK(&wdev->mgmt_registrations_update_wk,
cfg80211_mgmt_registrations_update_wk);
INIT_LIST_HEAD(&wdev->pmsr_list);
spin_lock_init(&wdev->pmsr_lock);
INIT_WORK(&wdev->pmsr_free_wk, cfg80211_pmsr_free_wk);

2
net/wireless/core.h
View File

@ -99,6 +99,8 @@ struct cfg80211_registered_device {
struct cfg80211_chan_def cac_done_chandef;
struct work_struct propagate_cac_done_wk;
struct work_struct mgmt_registrations_update_wk;
/* must be last because of the way we do wiphy_priv(),
* and it should at least be aligned to NETDEV_ALIGN */
struct wiphy wiphy __aligned(NETDEV_ALIGN);

26
net/wireless/mlme.c
View File

@ -440,9 +440,15 @@ static void cfg80211_mgmt_registrations_update(struct wireless_dev *wdev)
ASSERT_RTNL();
spin_lock_bh(&wdev->mgmt_registrations_lock);
if (!wdev->mgmt_registrations_need_update) {
spin_unlock_bh(&wdev->mgmt_registrations_lock);
return;
}
rcu_read_lock();
list_for_each_entry_rcu(tmp, &rdev->wiphy.wdev_list, list) {
list_for_each_entry_rcu(reg, &tmp->mgmt_registrations, list) {
list_for_each_entry(reg, &tmp->mgmt_registrations, list) {
u32 mask = BIT(le16_to_cpu(reg->frame_type) >> 4);
u32 mcast_mask = 0;
@ -460,16 +466,23 @@ static void cfg80211_mgmt_registrations_update(struct wireless_dev *wdev)
}
rcu_read_unlock();
wdev->mgmt_registrations_need_update = 0;
spin_unlock_bh(&wdev->mgmt_registrations_lock);
rdev_update_mgmt_frame_registrations(rdev, wdev, &upd);
}
void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk)
{
struct wireless_dev *wdev = container_of(wk, struct wireless_dev,
mgmt_registrations_update_wk);
struct cfg80211_registered_device *rdev;
struct wireless_dev *wdev;
rdev = container_of(wk, struct cfg80211_registered_device,
mgmt_registrations_update_wk);
rtnl_lock();
cfg80211_mgmt_registrations_update(wdev);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
cfg80211_mgmt_registrations_update(wdev);
rtnl_unlock();
}
@ -557,6 +570,7 @@ int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
nreg->multicast_rx = multicast_rx;
list_add(&nreg->list, &wdev->mgmt_registrations);
}
wdev->mgmt_registrations_need_update = 1;
spin_unlock_bh(&wdev->mgmt_registrations_lock);
cfg80211_mgmt_registrations_update(wdev);
@ -585,7 +599,8 @@ void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
list_del(&reg->list);
kfree(reg);
schedule_work(&wdev->mgmt_registrations_update_wk);
wdev->mgmt_registrations_need_update = 1;
schedule_work(&rdev->mgmt_registrations_update_wk);
}
spin_unlock_bh(&wdev->mgmt_registrations_lock);
@ -608,6 +623,7 @@ void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
list_del(&reg->list);
kfree(reg);
}
wdev->mgmt_registrations_need_update = 1;
spin_unlock_bh(&wdev->mgmt_registrations_lock);
cfg80211_mgmt_registrations_update(wdev);