summaryrefslogtreecommitdiffstats
path: root/net/mac80211/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/mac80211/main.c')
-rw-r--r--net/mac80211/main.c28
1 files changed, 22 insertions, 6 deletions
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 4fb2709cb527..513627896204 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -256,8 +256,27 @@ static void ieee80211_restart_work(struct work_struct *work)
flush_work(&local->radar_detected_work);
rtnl_lock();
- list_for_each_entry(sdata, &local->interfaces, list)
+ list_for_each_entry(sdata, &local->interfaces, list) {
+ /*
+ * XXX: there may be more work for other vif types and even
+ * for station mode: a good thing would be to run most of
+ * the iface type's dependent _stop (ieee80211_mg_stop,
+ * ieee80211_ibss_stop) etc...
+ * For now, fix only the specific bug that was seen: race
+ * between csa_connection_drop_work and us.
+ */
+ if (sdata->vif.type == NL80211_IFTYPE_STATION) {
+ /*
+ * This worker is scheduled from the iface worker that
+ * runs on mac80211's workqueue, so we can't be
+ * scheduling this worker after the cancel right here.
+ * The exception is ieee80211_chswitch_done.
+ * Then we can have a race...
+ */
+ cancel_work_sync(&sdata->u.mgd.csa_connection_drop_work);
+ }
flush_delayed_work(&sdata->dec_tailroom_needed_wk);
+ }
ieee80211_scan_cancel(local);
/* make sure any new ROC will consider local->in_reconfig */
@@ -471,10 +490,7 @@ static const struct ieee80211_vht_cap mac80211_vht_capa_mod_mask = {
cpu_to_le32(IEEE80211_VHT_CAP_RXLDPC |
IEEE80211_VHT_CAP_SHORT_GI_80 |
IEEE80211_VHT_CAP_SHORT_GI_160 |
- IEEE80211_VHT_CAP_RXSTBC_1 |
- IEEE80211_VHT_CAP_RXSTBC_2 |
- IEEE80211_VHT_CAP_RXSTBC_3 |
- IEEE80211_VHT_CAP_RXSTBC_4 |
+ IEEE80211_VHT_CAP_RXSTBC_MASK |
IEEE80211_VHT_CAP_TXSTBC |
IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE |
IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
@@ -1208,6 +1224,7 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
#if IS_ENABLED(CONFIG_IPV6)
unregister_inet6addr_notifier(&local->ifa6_notifier);
#endif
+ ieee80211_txq_teardown_flows(local);
rtnl_lock();
@@ -1236,7 +1253,6 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
skb_queue_purge(&local->skb_queue);
skb_queue_purge(&local->skb_queue_unreliable);
skb_queue_purge(&local->skb_queue_tdls_chsw);
- ieee80211_txq_teardown_flows(local);
destroy_workqueue(local->workqueue);
wiphy_unregister(local->hw.wiphy);