mac80211: A-MPDU Rx adding basic functionality

This patch adds the basic needed abilities and functions for A-MPDU Rx session
changed functions:
 - ieee80211_sta_process_addba_request - Rx A-MPDU initialization enabled
 - ieee80211_stop - stops all A-MPDU Rx in case interface goes down
added functions:
 - ieee80211_send_delba - used for sending out Del BA in A-MPDU sessions
 - ieee80211_sta_stop_rx_BA_session - stopping Rx A-MPDU session
 - sta_rx_agg_session_timer_expired - stops A-MPDU Rx use if load is too
low

Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index ffe8a49d8927..60ca07804056 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -104,6 +104,7 @@ static void sta_info_release(struct kref *kref)
         struct sta_info *sta = container_of(kref, struct sta_info, kref);
         struct ieee80211_local *local = sta->local;
         struct sk_buff *skb;
+        int i;
 
         /* free sta structure; it has already been removed from
          * hash table etc. external structures. Make sure that all
@@ -116,6 +117,8 @@ static void sta_info_release(struct kref *kref)
         while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
                 dev_kfree_skb_any(skb);
         }
+        for (i = 0; i <  STA_TID_NUM; i++)
+                del_timer_sync(&sta->ampdu_mlme.tid_rx[i].session_timer);
         rate_control_free_sta(sta->rate_ctrl, sta->rate_ctrl_priv);
         rate_control_put(sta->rate_ctrl);
         kfree(sta);