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Revert "wifi: mac80211: fix RCU list iterations"

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This reverts commit f373196093 which is
commit ac35180032 upstream.

It should not have been backported here due to lack of other rcu
changes in the stable branches.

Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Miriam Rachel Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman
2024-11-10 06:02:40 +01:00
parent 6e62dab357
commit bb9982d777
4 changed files with 4 additions and 8 deletions
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4
net/mac80211/chan.c
View File

@@ -245,9 +245,7 @@ ieee80211_get_max_required_bw(struct ieee80211_sub_if_data *sdata,
enum nl80211_chan_width max_bw = NL80211_CHAN_WIDTH_20_NOHT; enum nl80211_chan_width max_bw = NL80211_CHAN_WIDTH_20_NOHT;
struct sta_info *sta; struct sta_info *sta;
lockdep_assert_wiphy(sdata->local->hw.wiphy); list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
list_for_each_entry(sta, &sdata->local->sta_list, list) {
if (sdata != sta->sdata && if (sdata != sta->sdata &&
!(sta->sdata->bss && sta->sdata->bss == sdata->bss)) !(sta->sdata->bss && sta->sdata->bss == sdata->bss))
continue; continue;

2
net/mac80211/mlme.c
View File

@@ -732,7 +732,7 @@ static bool ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
bool disable_mu_mimo = false; bool disable_mu_mimo = false;
struct ieee80211_sub_if_data *other; struct ieee80211_sub_if_data *other;
list_for_each_entry(other, &local->interfaces, list) { list_for_each_entry_rcu(other, &local->interfaces, list) {
if (other->vif.bss_conf.mu_mimo_owner) { if (other->vif.bss_conf.mu_mimo_owner) {
disable_mu_mimo = true; disable_mu_mimo = true;
break; break;

2
net/mac80211/scan.c
View File

@@ -490,7 +490,7 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
* the scan was in progress; if there was none this will * the scan was in progress; if there was none this will
* just be a no-op for the particular interface. * just be a no-op for the particular interface.
*/ */
list_for_each_entry(sdata, &local->interfaces, list) { list_for_each_entry_rcu(sdata, &local->interfaces, list) {
if (ieee80211_sdata_running(sdata)) if (ieee80211_sdata_running(sdata))
wiphy_work_queue(sdata->local->hw.wiphy, &sdata->work); wiphy_work_queue(sdata->local->hw.wiphy, &sdata->work);
} }

4
net/mac80211/util.c
View File

@@ -745,9 +745,7 @@ static void __iterate_interfaces(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata; struct ieee80211_sub_if_data *sdata;
bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE; bool active_only = iter_flags & IEEE80211_IFACE_ITER_ACTIVE;
list_for_each_entry_rcu(sdata, &local->interfaces, list, list_for_each_entry_rcu(sdata, &local->interfaces, list) {
lockdep_is_held(&local->iflist_mtx) ||
lockdep_is_held(&local->hw.wiphy->mtx)) {
switch (sdata->vif.type) { switch (sdata->vif.type) {
case NL80211_IFTYPE_MONITOR: case NL80211_IFTYPE_MONITOR:
if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE)) if (!(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))