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authorJohannes Berg <johannes.berg@intel.com>2010-06-10 12:21:39 +0400
committerJohn W. Linville <linville@tuxdriver.com>2010-06-14 23:39:27 +0400
commita622ab72b4dcfdf53e24b16e9530cb876979a00c (patch)
tree170d2ccf3a594f3675b5fa58378319031054e806 /net/mac80211/ht.c
parenta87f736d942c86255e3088c606f0e3eab6bbf784 (diff)
downloadlinux-a622ab72b4dcfdf53e24b16e9530cb876979a00c.tar.xz
mac80211: use RCU for TX aggregation
Currently we allocate some memory for each TX aggregation session and additionally keep a state bitmap indicating the state it is in. By using RCU to protect the pointer, moving the state into the structure and some locking trickery we can avoid locking when the TX agg session is fully operational. 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.c9
1 files changed, 2 insertions, 7 deletions
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 2ab106a0a491..1af173ed2d5e 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -176,13 +176,8 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
if (initiator == WLAN_BACK_INITIATOR)
__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_INITIATOR, 0);
- else { /* WLAN_BACK_RECIPIENT */
- spin_lock_bh(&sta->lock);
- if (sta->ampdu_mlme.tid_state_tx[tid] & HT_ADDBA_REQUESTED_MSK)
- ___ieee80211_stop_tx_ba_session(sta, tid,
- WLAN_BACK_RECIPIENT);
- spin_unlock_bh(&sta->lock);
- }
+ else
+ __ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_RECIPIENT);
}
int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,