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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>
This commit is contained in:
Wey-Yi Guy 2010-02-03 09:28:55 -08:00 committed by John W. Linville
parent 3f7c5c10e9
commit 74e2bd1fa3
1 changed files with 8 additions and 0 deletions
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8
net/mac80211/util.c
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@ -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))