commit bd2ce6e43f65127bc723e7fcc044758cf8113260
author Sujith Manoharan <Sujith.Manoharan@atheros.com> Wed Dec 15 07:47:10 2010 +0530
committer John W. Linville <linville@tuxdriver.com> Wed Dec 15 17:03:59 2010 -0500
tree 46eeb3f454619549d563addd8eff3b4d5475179f
parent a293911d4fd5e8593dbf478399a77f990d466269

mac80211: Add timeout to BA session start API

Allow drivers or rate control algorithms to specify BlockAck session
timeout when initiating an ADDBA transaction. This is useful in cases
where maintaining persistent BA sessions does not incur any overhead.

The current timeout value of 5000 TUs is retained for all non ath9k/ath9k_htc
drivers.

Signed-off-by: Sujith Manoharan <Sujith.Manoharan@atheros.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/agg-tx.c

diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index d4679b2..9cc472c 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -342,10 +342,11 @@
 	/* send AddBA request */
 	ieee80211_send_addba_request(sdata, sta->sta.addr, tid,
 				     tid_tx->dialog_token, start_seq_num,
-				     0x40, 5000);
+				     0x40, tid_tx->timeout);
 }
 
-int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid)
+int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
+				  u16 timeout)
 {
 	struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
 	struct ieee80211_sub_if_data *sdata = sta->sdata;
@@ -420,6 +421,8 @@
 	skb_queue_head_init(&tid_tx->pending);
 	__set_bit(HT_AGG_STATE_WANT_START, &tid_tx->state);
 
+	tid_tx->timeout = timeout;
+
 	/* Tx timer */
 	tid_tx->addba_resp_timer.function = sta_addba_resp_timer_expired;
 	tid_tx->addba_resp_timer.data = (unsigned long)&sta->timer_to_tid[tid];

net/mac80211/debugfs_sta.c

diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index 8bb5af8..c04a139 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -189,7 +189,7 @@
 
 	if (tx) {
 		if (start)
-			ret = ieee80211_start_tx_ba_session(&sta->sta, tid);
+			ret = ieee80211_start_tx_ba_session(&sta->sta, tid, 5000);
 		else
 			ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
 	} else {

net/mac80211/rc80211_minstrel_ht.c

diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 4ad7a36..165a451 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -374,7 +374,7 @@
 	if (skb_get_queue_mapping(skb) == IEEE80211_AC_VO)
 		return;
 
-	ieee80211_start_tx_ba_session(pubsta, tid);
+	ieee80211_start_tx_ba_session(pubsta, tid, 5000);
 }
 
 static void

net/mac80211/sta_info.h

diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index fdca52c..bbdd2a8 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -78,6 +78,7 @@
  * @addba_resp_timer: timer for peer's response to addba request
  * @pending: pending frames queue -- use sta's spinlock to protect
  * @dialog_token: dialog token for aggregation session
+ * @timeout: session timeout value to be filled in ADDBA requests
  * @state: session state (see above)
  * @stop_initiator: initiator of a session stop
  * @tx_stop: TX DelBA frame when stopping
@@ -96,6 +97,7 @@
 	struct timer_list addba_resp_timer;
 	struct sk_buff_head pending;
 	unsigned long state;
+	u16 timeout;
 	u8 dialog_token;
 	u8 stop_initiator;
 	bool tx_stop;