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authorJohannes Berg <johannes.berg@intel.com>2010-06-10 12:21:42 +0400
committerJohn W. Linville <linville@tuxdriver.com>2010-06-14 23:39:27 +0400
commit0ab337032a0dfcd5f2527d3306d3deeba5f95b59 (patch)
tree88795edc149fd88574fece0c8f23774ee8a9155c /net/mac80211/ht.c
parenta6a67db2bc89d2b1ff07e0817f11235c20d2c329 (diff)
downloadlinux-0ab337032a0dfcd5f2527d3306d3deeba5f95b59.tar.xz
mac80211: make TX aggregation start/stop request async
When the driver or rate control requests starting or stopping an aggregation session, that currently causes a direct callback into the driver, which could potentially cause locking problems. Also, the functions need to be callable from contexts that cannot sleep, and thus will interfere with making the ampdu_action callback sleeping. To address these issues, add a new work item for each station that will process any start or stop requests out of line. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/ht.c')
-rw-r--r--net/mac80211/ht.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 1af173ed2d5e..4dfba7808a24 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -105,6 +105,8 @@ void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta)
{
int i;
+ cancel_work_sync(&sta->ampdu_mlme.work);
+
for (i = 0; i < STA_TID_NUM; i++) {
__ieee80211_stop_tx_ba_session(sta, i, WLAN_BACK_INITIATOR);
__ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT,