[PATCH v2 1/1] mac80211: tear down all agg queues when restart/reconfig hw

[<wey-yi.w.guy@intel.com>]

From: Wey-Yi Guy <wey-yi.w.guy@intel.com>

When there is a need to restart/reconfig hw, tear down all the
aggregation queues and let the mac80211 and driver get in-sync and have
the opportunity to re-establish the aggregation queues.

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
---
v2: add rcu_read_lock()
---
 net/mac80211/util.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index ca170b4..27e8833 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1188,6 +1188,16 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	ieee80211_wake_queues_by_reason(hw,
 			IEEE80211_QUEUE_STOP_REASON_SUSPEND);
 
+	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();
+
 	/*
 	 * If this is for hw restart things are still running.
 	 * We may want to change that later, however.
-- 
1.5.6.3