From b1720231ca07dee3382980f3b25e6581bd2e54e9 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 23 Mar 2009 17:28:39 +0100 Subject: mac80211: unify and fix TX aggregation start When TX aggregation becomes operational, we do a number of steps: 1) print a debug message 2) wake the virtual queue 3) notify the driver Unfortunately, 1) and 3) are only done if the driver is first to reply to the aggregation request, it is, however, possible that the remote station replies before the driver! Thus, unify the code for this and call the new function ieee80211_agg_tx_operational in both places where TX aggregation can become operational. Additionally, rename the driver notification from IEEE80211_AMPDU_TX_RESUME to IEEE80211_AMPDU_TX_OPERATIONAL. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- net/mac80211/agg-tx.c | 63 ++++++++++++++++++++++----------------------------- 1 file changed, 27 insertions(+), 36 deletions(-) (limited to 'net') diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c index e5776ef1717a..fd718e2b29f7 100644 --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -404,6 +404,27 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid) } EXPORT_SYMBOL(ieee80211_start_tx_ba_session); +static void ieee80211_agg_tx_operational(struct ieee80211_local *local, + struct sta_info *sta, u16 tid) +{ +#ifdef CONFIG_MAC80211_HT_DEBUG + printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); +#endif + + if (local->hw.ampdu_queues) { + /* + * Wake up the A-MPDU queue, we stopped it earlier, + * this will in turn wake the entire AC. + */ + ieee80211_wake_queue_by_reason(&local->hw, + local->hw.queues + sta->tid_to_tx_q[tid], + IEEE80211_QUEUE_STOP_REASON_AGGREGATION); + } + + local->ops->ampdu_action(&local->hw, IEEE80211_AMPDU_TX_OPERATIONAL, + &sta->sta, tid, NULL); +} + void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) { struct ieee80211_local *local = hw_to_local(hw); @@ -446,20 +467,8 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid) *state |= HT_ADDBA_DRV_READY_MSK; - if (*state == HT_AGG_STATE_OPERATIONAL) { -#ifdef CONFIG_MAC80211_HT_DEBUG - printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid); -#endif - if (hw->ampdu_queues) { - /* - * Wake up this queue, we stopped it earlier, - * this will in turn wake the entire AC. - */ - ieee80211_wake_queue_by_reason(hw, - hw->queues + sta->tid_to_tx_q[tid], - IEEE80211_QUEUE_STOP_REASON_AGGREGATION); - } - } + if (*state == HT_AGG_STATE_OPERATIONAL) + ieee80211_agg_tx_operational(local, sta, tid); out: spin_unlock_bh(&sta->lock); @@ -646,9 +655,7 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local, struct ieee80211_mgmt *mgmt, size_t len) { - struct ieee80211_hw *hw = &local->hw; - u16 capab; - u16 tid, start_seq_num; + u16 capab, tid; u8 *state; capab = le16_to_cpu(mgmt->u.action.u.addba_resp.capab); @@ -682,26 +689,10 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local, *state |= HT_ADDBA_RECEIVED_MSK; - if (hw->ampdu_queues && *state != curstate && - *state == HT_AGG_STATE_OPERATIONAL) { - /* - * Wake up this queue, we stopped it earlier, - * this will in turn wake the entire AC. - */ - ieee80211_wake_queue_by_reason(hw, - hw->queues + sta->tid_to_tx_q[tid], - IEEE80211_QUEUE_STOP_REASON_AGGREGATION); - } - sta->ampdu_mlme.addba_req_num[tid] = 0; + if (*state != curstate && *state == HT_AGG_STATE_OPERATIONAL) + ieee80211_agg_tx_operational(local, sta, tid); - if (local->ops->ampdu_action) { - (void)local->ops->ampdu_action(hw, - IEEE80211_AMPDU_TX_RESUME, - &sta->sta, tid, &start_seq_num); - } -#ifdef CONFIG_MAC80211_HT_DEBUG - printk(KERN_DEBUG "Resuming TX aggregation for tid %d\n", tid); -#endif /* CONFIG_MAC80211_HT_DEBUG */ + sta->ampdu_mlme.addba_req_num[tid] = 0; } else { sta->ampdu_mlme.addba_req_num[tid]++; ___ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_INITIATOR); -- cgit v1.2.3