diff options
| -rw-r--r-- | include/net/mac80211.h | 17 | ||||
| -rw-r--r-- | net/mac80211/agg-rx.c | 15 | ||||
| -rw-r--r-- | net/mac80211/ht.c | 6 | ||||
| -rw-r--r-- | net/mac80211/sta_info.h | 3 |
4 files changed, 41 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index b250c6303d6..3b31ec95dd8 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2969,6 +2969,23 @@ void ieee80211_ready_on_channel(struct ieee80211_hw *hw); */ void ieee80211_remain_on_channel_expired(struct ieee80211_hw *hw); +/** + * ieee80211_stop_rx_ba_session - callback to stop existing BA sessions + * + * in order not to harm the system performance and user experience, the device + * may request not to allow any rx ba session and tear down existing rx ba + * sessions based on system constraints such as periodic BT activity that needs + * to limit wlan activity (eg.sco or a2dp)." + * in such cases, the intention is to limit the duration of the rx ppdu and + * therefore prevent the peer device to use a-mpdu aggregation. + * + * @vif: &struct ieee80211_vif pointer from the add_interface callback. + * @ba_rx_bitmap: Bit map of open rx ba per tid + * @addr: & to bssid mac address + */ +void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap, + const u8 *addr); + /* Rate control API */ /** diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c index 9c0d76cdca9..89b0b2ca6db 100644 --- a/net/mac80211/agg-rx.c +++ b/net/mac80211/agg-rx.c @@ -100,6 +100,21 @@ void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, mutex_unlock(&sta->ampdu_mlme.mtx); } +void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap, + const u8 *addr) +{ + struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); + struct sta_info *sta = sta_info_get(sdata, addr); + int i; + + for (i = 0; i < STA_TID_NUM; i++) + if (ba_rx_bitmap & BIT(i)) + set_bit(i, sta->ampdu_mlme.tid_rx_stop_requested); + + ieee80211_queue_work(&sta->local->hw, &sta->ampdu_mlme.work); +} +EXPORT_SYMBOL(ieee80211_stop_rx_ba_session); + /* * After accepting the AddBA Request we activated a timer, * resetting it after each frame that arrives from the originator. diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c index 591add22bcc..7cfc286946c 100644 --- a/net/mac80211/ht.c +++ b/net/mac80211/ht.c @@ -140,6 +140,12 @@ void ieee80211_ba_session_work(struct work_struct *work) sta, tid, WLAN_BACK_RECIPIENT, WLAN_REASON_QSTA_TIMEOUT, true); + if (test_and_clear_bit(tid, + sta->ampdu_mlme.tid_rx_stop_requested)) + ___ieee80211_stop_rx_ba_session( + sta, tid, WLAN_BACK_RECIPIENT, + WLAN_REASON_UNSPECIFIED, true); + tid_tx = sta->ampdu_mlme.tid_start_tx[tid]; if (tid_tx) { /* diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h index c6ae8718bd5..a06d64ebc17 100644 --- a/net/mac80211/sta_info.h +++ b/net/mac80211/sta_info.h @@ -158,6 +158,8 @@ struct tid_ampdu_rx { * @work: work struct for starting/stopping aggregation * @tid_rx_timer_expired: bitmap indicating on which TIDs the * RX timer expired until the work for it runs + * @tid_rx_stop_requested: bitmap indicating which BA sessions per TID the + * driver requested to close until the work for it runs * @mtx: mutex to protect all TX data (except non-NULL assignments * to tid_tx[idx], which are protected by the sta spinlock) */ @@ -166,6 +168,7 @@ struct sta_ampdu_mlme { /* rx */ struct tid_ampdu_rx __rcu *tid_rx[STA_TID_NUM]; unsigned long tid_rx_timer_expired[BITS_TO_LONGS(STA_TID_NUM)]; + unsigned long tid_rx_stop_requested[BITS_TO_LONGS(STA_TID_NUM)]; /* tx */ struct work_struct work; struct tid_ampdu_tx __rcu *tid_tx[STA_TID_NUM]; |