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authorWey-Yi Guy <wey-yi.w.guy@intel.com>2010-02-03 09:28:55 -0800
committerJohn W. Linville <linville@tuxdriver.com>2010-02-08 16:50:54 -0500
commit74e2bd1fa3ae9695af566ad5a7a288898787b909 (patch)
tree25b0c76fb983cef091fe3a02fe27ab2891b0efb8
parent3f7c5c10e9dc6bf90179eb9f7c06151d508fb324 (diff)
mac80211: tear down all agg queues when restart/reconfig hw
When there is a need to restart/reconfig hw, tear down all the aggregation queues and let the mac80211 and driver get in-sync to have the opportunity to re-establish the aggregation queues again. Need to wait until driver re-establish all the station information before tear down the aggregation queues, driver(at least iwlwifi driver) will reject the stop aggregation queue request if station is not ready. But also need to make sure the aggregation queues are tear down before waking up the queues, so mac80211 will not sending frames with aggregation bit set. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--net/mac80211/util.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 3af439a85b3..c453226f06b 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1178,6 +1178,14 @@ int ieee80211_reconfig(struct ieee80211_local *local)
}
}
+ rcu_read_lock();
+ if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
+ list_for_each_entry_rcu(sta, &local->sta_list, list) {
+ ieee80211_sta_tear_down_BA_sessions(sta);
+ }
+ }
+ rcu_read_unlock();
+
/* add back keys */
list_for_each_entry(sdata, &local->interfaces, list)
if (ieee80211_sdata_running(sdata))