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Merge keystone/mirror-android12-5.10 into keystone/android12-5.10-keystone-qcom-dev

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* keystone/mirror-android12-5.10:
  ANDROID: GKI: fix up abi breakage from "cfg80211: fix management registrations locking"
  UPSTREAM: cfg80211: fix management registrations locking

Signed-off-by: Daniel Norman <danielnorman@google.com>
Change-Id: Ia622e37ce7a0502213c37294b0e1f1998960b2f4
This commit is contained in:
Daniel Norman 2021-11-08 09:27:30 -08:00
commit daa5d38561
4 changed files with 23 additions and 14 deletions
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7
include/net/cfg80211.h
View File

@ -5259,7 +5259,6 @@ struct cfg80211_cqm_config;
* netdev and may otherwise be used by driver read-only, will be update
* by cfg80211 on change_interface
* @mgmt_registrations: list of registrations for management frames
* @mgmt_registrations_lock: lock for the list
* @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
@ -5306,6 +5305,12 @@ struct wireless_dev {
u32 identifier;
struct list_head mgmt_registrations;
/*
* ANDROID: mgmt_registrations_lock was restored to preserve ABI in
* 5.10.77 due to backport of 09b1d5dc6ce1 ("cfg80211: fix management
* registrations locking") but it is not used for anything so do not
* touch this variable!
*/
spinlock_t mgmt_registrations_lock;
u8 mgmt_registrations_need_update:1;

2
net/wireless/core.c
View File

@ -501,6 +501,7 @@ struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
INIT_WORK(&rdev->propagate_cac_done_wk, cfg80211_propagate_cac_done_wk);
INIT_WORK(&rdev->mgmt_registrations_update_wk,
cfg80211_mgmt_registrations_update_wk);
spin_lock_init(&rdev->mgmt_registrations_lock);
#ifdef CONFIG_CFG80211_DEFAULT_PS
rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
@ -1256,7 +1257,6 @@ void cfg80211_init_wdev(struct wireless_dev *wdev)
INIT_LIST_HEAD(&wdev->event_list);
spin_lock_init(&wdev->event_lock);
INIT_LIST_HEAD(&wdev->mgmt_registrations);
spin_lock_init(&wdev->mgmt_registrations_lock);
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

@ -101,6 +101,8 @@ struct cfg80211_registered_device {
struct work_struct propagate_cac_done_wk;
struct work_struct mgmt_registrations_update_wk;
/* lock for all wdev lists */
spinlock_t mgmt_registrations_lock;
/* must be last because of the way we do wiphy_priv(),
* and it should at least be aligned to NETDEV_ALIGN */

26
net/wireless/mlme.c
View File

@ -448,9 +448,9 @@ static void cfg80211_mgmt_registrations_update(struct wireless_dev *wdev)
ASSERT_RTNL();
spin_lock_bh(&wdev->mgmt_registrations_lock);
spin_lock_bh(&rdev->mgmt_registrations_lock);
if (!wdev->mgmt_registrations_need_update) {
spin_unlock_bh(&wdev->mgmt_registrations_lock);
spin_unlock_bh(&rdev->mgmt_registrations_lock);
return;
}
@ -475,7 +475,7 @@ 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);
spin_unlock_bh(&rdev->mgmt_registrations_lock);
rdev_update_mgmt_frame_registrations(rdev, wdev, &upd);
}
@ -499,6 +499,7 @@ int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
int match_len, bool multicast_rx,
struct netlink_ext_ack *extack)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_mgmt_registration *reg, *nreg;
int err = 0;
u16 mgmt_type;
@ -544,7 +545,7 @@ int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
if (!nreg)
return -ENOMEM;
spin_lock_bh(&wdev->mgmt_registrations_lock);
spin_lock_bh(&rdev->mgmt_registrations_lock);
list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
int mlen = min(match_len, reg->match_len);
@ -579,7 +580,7 @@ int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
list_add(&nreg->list, &wdev->mgmt_registrations);
}
wdev->mgmt_registrations_need_update = 1;
spin_unlock_bh(&wdev->mgmt_registrations_lock);
spin_unlock_bh(&rdev->mgmt_registrations_lock);
cfg80211_mgmt_registrations_update(wdev);
@ -587,7 +588,7 @@ int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
out:
kfree(nreg);
spin_unlock_bh(&wdev->mgmt_registrations_lock);
spin_unlock_bh(&rdev->mgmt_registrations_lock);
return err;
}
@ -598,7 +599,7 @@ void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct cfg80211_mgmt_registration *reg, *tmp;
spin_lock_bh(&wdev->mgmt_registrations_lock);
spin_lock_bh(&rdev->mgmt_registrations_lock);
list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
if (reg->nlportid != nlportid)
@ -611,7 +612,7 @@ void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
schedule_work(&rdev->mgmt_registrations_update_wk);
}
spin_unlock_bh(&wdev->mgmt_registrations_lock);
spin_unlock_bh(&rdev->mgmt_registrations_lock);
if (nlportid && rdev->crit_proto_nlportid == nlportid) {
rdev->crit_proto_nlportid = 0;
@ -624,15 +625,16 @@ void cfg80211_mlme_unregister_socket(struct wireless_dev *wdev, u32 nlportid)
void cfg80211_mlme_purge_registrations(struct wireless_dev *wdev)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_mgmt_registration *reg, *tmp;
spin_lock_bh(&wdev->mgmt_registrations_lock);
spin_lock_bh(&rdev->mgmt_registrations_lock);
list_for_each_entry_safe(reg, tmp, &wdev->mgmt_registrations, list) {
list_del(&reg->list);
kfree(reg);
}
wdev->mgmt_registrations_need_update = 1;
spin_unlock_bh(&wdev->mgmt_registrations_lock);
spin_unlock_bh(&rdev->mgmt_registrations_lock);
cfg80211_mgmt_registrations_update(wdev);
}
@ -780,7 +782,7 @@ bool cfg80211_rx_mgmt_khz(struct wireless_dev *wdev, int freq, int sig_dbm,
data = buf + ieee80211_hdrlen(mgmt->frame_control);
data_len = len - ieee80211_hdrlen(mgmt->frame_control);
spin_lock_bh(&wdev->mgmt_registrations_lock);
spin_lock_bh(&rdev->mgmt_registrations_lock);
list_for_each_entry(reg, &wdev->mgmt_registrations, list) {
if (reg->frame_type != ftype)
@ -804,7 +806,7 @@ bool cfg80211_rx_mgmt_khz(struct wireless_dev *wdev, int freq, int sig_dbm,
break;
}
spin_unlock_bh(&wdev->mgmt_registrations_lock);
spin_unlock_bh(&rdev->mgmt_registrations_lock);
trace_cfg80211_return_bool(result);
return result;