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Commit c82c4a80 authored by Johannes Berg's avatar Johannes Berg
Browse files

mac80211: split aggregation stop by reason 



The initiator/tx doesn't really identify why an
aggregation session is stopped, give a reason
for stopping that more clearly identifies what's
going on. This will help tell the driver clearly
what is expected of it.

Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent d582cffb

net/mac80211/agg-tx.c

+8 −9
Original line number Diff line number Diff line
@@ -150,8 +150,7 @@ void ieee80211_assign_tid_tx(struct sta_info *sta, int tid, 
}



int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,

				    enum ieee80211_back_parties initiator,

				    bool tx)

				    enum ieee80211_agg_stop_reason reason)

{

	struct ieee80211_local *local = sta->local;

	struct tid_ampdu_tx *tid_tx;
@@ -212,8 +211,10 @@ int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, 
	 */

	synchronize_net();



	tid_tx->stop_initiator = initiator;

	tid_tx->tx_stop = tx;

	tid_tx->stop_initiator = reason == AGG_STOP_PEER_REQUEST ?

					WLAN_BACK_RECIPIENT :

					WLAN_BACK_INITIATOR;

	tid_tx->tx_stop = reason == AGG_STOP_LOCAL_REQUEST;



	ret = drv_ampdu_action(local, sta->sdata,

			       IEEE80211_AMPDU_TX_STOP,
@@ -660,14 +661,13 @@ void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif, 
EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);



int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,

				   enum ieee80211_back_parties initiator,

				   bool tx)

				   enum ieee80211_agg_stop_reason reason)

{

	int ret;



	mutex_lock(&sta->ampdu_mlme.mtx);



	ret = ___ieee80211_stop_tx_ba_session(sta, tid, initiator, tx);

	ret = ___ieee80211_stop_tx_ba_session(sta, tid, reason);



	mutex_unlock(&sta->ampdu_mlme.mtx);
@@ -868,8 +868,7 @@ void ieee80211_process_addba_resp(struct ieee80211_local *local, 
		}



	} else {

		___ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_INITIATOR,

						false);

		___ieee80211_stop_tx_ba_session(sta, tid, AGG_STOP_DECLINED);

	}



 out:

net/mac80211/ht.c

+8 −7
Original line number Diff line number Diff line
@@ -182,16 +182,19 @@ void ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, 
	ieee80211_apply_htcap_overrides(sdata, ht_cap);

}



void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx)

void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,

					 enum ieee80211_agg_stop_reason reason)

{

	int i;



	cancel_work_sync(&sta->ampdu_mlme.work);



	for (i = 0; i <  IEEE80211_NUM_TIDS; i++) {

		__ieee80211_stop_tx_ba_session(sta, i, WLAN_BACK_INITIATOR, tx);

		__ieee80211_stop_tx_ba_session(sta, i, reason);

		__ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT,

					       WLAN_REASON_QSTA_LEAVE_QBSS, tx);

					       WLAN_REASON_QSTA_LEAVE_QBSS,

					       reason != AGG_STOP_DESTROY_STA &&

					       reason != AGG_STOP_PEER_REQUEST);

	}

}
@@ -248,8 +251,7 @@ void ieee80211_ba_session_work(struct work_struct *work) 
		if (tid_tx && test_and_clear_bit(HT_AGG_STATE_WANT_STOP,

						 &tid_tx->state))

			___ieee80211_stop_tx_ba_session(sta, tid,

							WLAN_BACK_INITIATOR,

							true);

							AGG_STOP_LOCAL_REQUEST);

	}

	mutex_unlock(&sta->ampdu_mlme.mtx);

}
@@ -317,8 +319,7 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, 
		__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_INITIATOR, 0,

					       true);

	else

		__ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,

					       true);

		__ieee80211_stop_tx_ba_session(sta, tid, AGG_STOP_PEER_REQUEST);

}



int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata,

net/mac80211/ieee80211_i.h

+4 −5
Original line number Diff line number Diff line
@@ -1432,7 +1432,8 @@ void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid, 
				     u16 initiator, u16 reason, bool stop);

void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,

				    u16 initiator, u16 reason, bool stop);

void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, bool tx);

void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,

					 enum ieee80211_agg_stop_reason reason);

void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,

			     struct sta_info *sta,

			     struct ieee80211_mgmt *mgmt, size_t len);
@@ -1446,11 +1447,9 @@ void ieee80211_process_addba_request(struct ieee80211_local *local, 
				     size_t len);



int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,

				   enum ieee80211_back_parties initiator,

				   bool tx);

				   enum ieee80211_agg_stop_reason reason);

int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,

				    enum ieee80211_back_parties initiator,

				    bool tx);

				    enum ieee80211_agg_stop_reason reason);

void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid);

void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid);

void ieee80211_ba_session_work(struct work_struct *work);

net/mac80211/mlme.c

+1 −1
Original line number Diff line number Diff line
@@ -1525,7 +1525,7 @@ static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, 
	sta = sta_info_get(sdata, ifmgd->bssid);

	if (sta) {

		set_sta_flag(sta, WLAN_STA_BLOCK_BA);

		ieee80211_sta_tear_down_BA_sessions(sta, false);

		ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA);

	}

	mutex_unlock(&local->sta_mtx);

net/mac80211/pm.c

+2 −1
Original line number Diff line number Diff line
@@ -42,7 +42,8 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) 
		mutex_lock(&local->sta_mtx);

		list_for_each_entry(sta, &local->sta_list, list) {

			set_sta_flag(sta, WLAN_STA_BLOCK_BA);

			ieee80211_sta_tear_down_BA_sessions(sta, true);

			ieee80211_sta_tear_down_BA_sessions(

					sta, AGG_STOP_LOCAL_REQUEST);

		}

		mutex_unlock(&local->sta_mtx);

	}