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mac80211: tear down BA sessions properly on suspend 

Currently, the code to tear down BA sessions will
execute after queues are stopped, but attempt to
send frames, so those frames will just get queued,
which isn't intended. Move this code to before to
tear down the sessions properly.

Additionally, after stopping queues, flush the TX
queues in the driver driver to make sure all the
frames went out.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2011-04-21 13:38:00 +02:00 committed by John W. Linville
parent 31d291a769
commit ca45de77ad
1 changed files with 11 additions and 5 deletions
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16
net/mac80211/pm.c
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@ -14,12 +14,23 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
ieee80211_scan_cancel(local);
if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
mutex_lock(&local->sta_mtx);
list_for_each_entry(sta, &local->sta_list, list) {
set_sta_flags(sta, WLAN_STA_BLOCK_BA);
ieee80211_sta_tear_down_BA_sessions(sta, true);
}
mutex_unlock(&local->sta_mtx);
}
ieee80211_stop_queues_by_reason(hw,
IEEE80211_QUEUE_STOP_REASON_SUSPEND);
/* flush out all packets */
synchronize_net();
drv_flush(local, false);
local->quiescing = true;
/* make quiescing visible to timers everywhere */
mb();
@ -43,11 +54,6 @@ int __ieee80211_suspend(struct ieee80211_hw *hw)
/* tear down aggregation sessions and remove STAs */
mutex_lock(&local->sta_mtx);
list_for_each_entry(sta, &local->sta_list, list) {
if (hw->flags & IEEE80211_HW_AMPDU_AGGREGATION) {
set_sta_flags(sta, WLAN_STA_BLOCK_BA);
ieee80211_sta_tear_down_BA_sessions(sta, true);
}
if (sta->uploaded) {
sdata = sta->sdata;
if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)