diff options
Diffstat (limited to 'net/mac80211/agg-tx.c')
| -rw-r--r-- | net/mac80211/agg-tx.c | 65 |
1 files changed, 24 insertions, 41 deletions
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c index bef516ec47f9..595c662a61e8 100644 --- a/net/mac80211/agg-tx.c +++ b/net/mac80211/agg-tx.c @@ -330,6 +330,11 @@ int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, spin_lock_bh(&sta->lock); + /* free struct pending for start, if present */ + tid_tx = sta->ampdu_mlme.tid_start_tx[tid]; + kfree(tid_tx); + sta->ampdu_mlme.tid_start_tx[tid] = NULL; + tid_tx = rcu_dereference_protected_tid_tx(sta, tid); if (!tid_tx) { spin_unlock_bh(&sta->lock); @@ -387,7 +392,8 @@ int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, * telling the driver. New packets will not go through since * the aggregation session is no longer OPERATIONAL. */ - synchronize_net(); + if (!local->in_reconfig) + synchronize_net(); tid_tx->stop_initiator = reason == AGG_STOP_PEER_REQUEST ? WLAN_BACK_RECIPIENT : @@ -422,23 +428,14 @@ int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid, * add Block Ack response will arrive from the recipient. * If this timer expires sta_addba_resp_timer_expired will be executed. */ -static void sta_addba_resp_timer_expired(unsigned long data) +static void sta_addba_resp_timer_expired(struct timer_list *t) { - /* not an elegant detour, but there is no choice as the timer passes - * only one argument, and both sta_info and TID are needed, so init - * flow in sta_info_create gives the TID as data, while the timer_to_id - * array gives the sta through container_of */ - u16 tid = *(u8 *)data; - struct sta_info *sta = container_of((void *)data, - struct sta_info, timer_to_tid[tid]); - struct tid_ampdu_tx *tid_tx; + struct tid_ampdu_tx *tid_tx = from_timer(tid_tx, t, addba_resp_timer); + struct sta_info *sta = tid_tx->sta; + u8 tid = tid_tx->tid; /* check if the TID waits for addBA response */ - rcu_read_lock(); - tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[tid]); - if (!tid_tx || - test_bit(HT_AGG_STATE_RESPONSE_RECEIVED, &tid_tx->state)) { - rcu_read_unlock(); + if (test_bit(HT_AGG_STATE_RESPONSE_RECEIVED, &tid_tx->state)) { ht_dbg(sta->sdata, "timer expired on %pM tid %d not expecting addBA response\n", sta->sta.addr, tid); @@ -449,7 +446,6 @@ static void sta_addba_resp_timer_expired(unsigned long data) sta->sta.addr, tid); ieee80211_stop_tx_ba_session(&sta->sta, tid); - rcu_read_unlock(); } void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid) @@ -525,39 +521,27 @@ void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid) * After accepting the AddBA Response we activated a timer, * resetting it after each frame that we send. */ -static void sta_tx_agg_session_timer_expired(unsigned long data) +static void sta_tx_agg_session_timer_expired(struct timer_list *t) { - /* not an elegant detour, but there is no choice as the timer passes - * only one argument, and various sta_info are needed here, so init - * flow in sta_info_create gives the TID as data, while the timer_to_id - * array gives the sta through container_of */ - u8 *ptid = (u8 *)data; - u8 *timer_to_id = ptid - *ptid; - struct sta_info *sta = container_of(timer_to_id, struct sta_info, - timer_to_tid[0]); - struct tid_ampdu_tx *tid_tx; + struct tid_ampdu_tx *tid_tx = from_timer(tid_tx, t, session_timer); + struct sta_info *sta = tid_tx->sta; + u8 tid = tid_tx->tid; unsigned long timeout; - rcu_read_lock(); - tid_tx = rcu_dereference(sta->ampdu_mlme.tid_tx[*ptid]); - if (!tid_tx || test_bit(HT_AGG_STATE_STOPPING, &tid_tx->state)) { - rcu_read_unlock(); + if (test_bit(HT_AGG_STATE_STOPPING, &tid_tx->state)) { return; } timeout = tid_tx->last_tx + TU_TO_JIFFIES(tid_tx->timeout); if (time_is_after_jiffies(timeout)) { mod_timer(&tid_tx->session_timer, timeout); - rcu_read_unlock(); return; } - rcu_read_unlock(); - ht_dbg(sta->sdata, "tx session timer expired on %pM tid %d\n", - sta->sta.addr, (u16)*ptid); + sta->sta.addr, tid); - ieee80211_stop_tx_ba_session(&sta->sta, *ptid); + ieee80211_stop_tx_ba_session(&sta->sta, tid); } int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid, @@ -670,16 +654,15 @@ int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid, __set_bit(HT_AGG_STATE_WANT_START, &tid_tx->state); tid_tx->timeout = timeout; + tid_tx->sta = sta; + tid_tx->tid = tid; /* response timer */ - setup_timer(&tid_tx->addba_resp_timer, - sta_addba_resp_timer_expired, - (unsigned long)&sta->timer_to_tid[tid]); + timer_setup(&tid_tx->addba_resp_timer, sta_addba_resp_timer_expired, 0); /* tx timer */ - setup_deferrable_timer(&tid_tx->session_timer, - sta_tx_agg_session_timer_expired, - (unsigned long)&sta->timer_to_tid[tid]); + timer_setup(&tid_tx->session_timer, + sta_tx_agg_session_timer_expired, TIMER_DEFERRABLE); /* assign a dialog token */ sta->ampdu_mlme.dialog_token_allocator++; |