diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2012-01-17 10:30:01 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-01-24 14:21:15 -0500 |
| commit | 151a02f693b866dd43e147725c818fc1ddb96aa3 (patch) | |
| tree | 994099f189a9dd106ea988a9f95c6d1e24e4ec2a | |
| parent | d5a2ca60e41fec4ede7b82d3608278523cffe77b (diff) | |
mac80211: clean up aggregation destruction
Yogesh's patch to destroy aggregation sessions when
stations are destroyed was needed, but unnecessarily
complex. Clean up this code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
| -rw-r--r-- | net/mac80211/sta_info.c | 31 |
1 files changed, 8 insertions, 23 deletions
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c index ff11f6bf826..a0900043266 100644 --- a/net/mac80211/sta_info.c +++ b/net/mac80211/sta_info.c @@ -815,35 +815,20 @@ static int __must_check __sta_info_destroy(struct sta_info *sta) } #endif - /* There could be some memory leaks because of ampdu tx pending queue - * not being freed before destroying the station info. - * - * Make sure that such queues are purged before freeing the station - * info. - * TODO: We have to somehow postpone the full destruction - * until the aggregation stop completes. Refer - * http://thread.gmane.org/gmane.linux.kernel.wireless.general/81936 + /* + * Destroy aggregation state here. It would be nice to wait for the + * driver to finish aggregation stop and then clean up, but for now + * drivers have to handle aggregation stop being requested, followed + * directly by station destruction. */ - - mutex_lock(&sta->ampdu_mlme.mtx); - for (i = 0; i < STA_TID_NUM; i++) { - tid_tx = rcu_dereference_protected_tid_tx(sta, i); + tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]); if (!tid_tx) continue; - if (skb_queue_len(&tid_tx->pending)) { -#ifdef CONFIG_MAC80211_HT_DEBUG - wiphy_debug(local->hw.wiphy, "TX A-MPDU purging %d " - "packets for tid=%d\n", - skb_queue_len(&tid_tx->pending), i); -#endif /* CONFIG_MAC80211_HT_DEBUG */ - __skb_queue_purge(&tid_tx->pending); - } - kfree_rcu(tid_tx, rcu_head); + __skb_queue_purge(&tid_tx->pending); + kfree(tid_tx); } - mutex_unlock(&sta->ampdu_mlme.mtx); - sta_info_free(local, sta); return 0; |