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-rw-r--r--net/mac80211/agg-rx.c12
-rw-r--r--net/mac80211/driver-ops.h2
-rw-r--r--net/mac80211/ht.c6
-rw-r--r--net/mac80211/iface.c8
-rw-r--r--net/mac80211/sta_info.c1
-rw-r--r--net/mac80211/sta_info.h3
6 files changed, 21 insertions, 11 deletions
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index aa858a03951c..a843df26f384 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -6,7 +6,7 @@
* Copyright 2005-2006, Devicescape Software, Inc.
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
- * Copyright 2007-2008, Intel Corporation
+ * Copyright 2007-2010, Intel Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -38,7 +38,7 @@ void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
struct ieee80211_local *local = sta->local;
struct tid_ampdu_rx *tid_rx;
- lockdep_assert_held(&sta->lock);
+ lockdep_assert_held(&sta->ampdu_mlme.mtx);
tid_rx = sta->ampdu_mlme.tid_rx[tid];
@@ -70,9 +70,9 @@ void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
u16 initiator, u16 reason)
{
- spin_lock_bh(&sta->lock);
+ mutex_lock(&sta->ampdu_mlme.mtx);
___ieee80211_stop_rx_ba_session(sta, tid, initiator, reason);
- spin_unlock_bh(&sta->lock);
+ mutex_unlock(&sta->ampdu_mlme.mtx);
}
/*
@@ -205,7 +205,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
/* examine state machine */
- spin_lock_bh(&sta->lock);
+ mutex_lock(&sta->ampdu_mlme.mtx);
if (sta->ampdu_mlme.tid_rx[tid]) {
#ifdef CONFIG_MAC80211_HT_DEBUG
@@ -279,7 +279,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
mod_timer(&tid_agg_rx->session_timer, TU_TO_EXP_TIME(timeout));
end:
- spin_unlock_bh(&sta->lock);
+ mutex_unlock(&sta->ampdu_mlme.mtx);
end_no_lock:
ieee80211_send_addba_resp(sta->sdata, sta->sta.addr, tid,
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 7d18a3245e3d..e5e7ef175ca2 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -349,9 +349,11 @@ static inline int drv_ampdu_action(struct ieee80211_local *local,
u16 *ssn)
{
int ret = -EOPNOTSUPP;
+ local_bh_disable();
if (local->ops->ampdu_action)
ret = local->ops->ampdu_action(&local->hw, &sdata->vif, action,
sta, tid, ssn);
+ local_bh_enable();
trace_drv_ampdu_action(local, sdata, action, sta, tid, ssn, ret);
return ret;
}
diff --git a/net/mac80211/ht.c b/net/mac80211/ht.c
index 730f8089678e..e29be64083c3 100644
--- a/net/mac80211/ht.c
+++ b/net/mac80211/ht.c
@@ -130,13 +130,17 @@ void ieee80211_ba_session_work(struct work_struct *work)
if (test_sta_flags(sta, WLAN_STA_BLOCK_BA))
return;
- spin_lock_bh(&sta->lock);
+ mutex_lock(&sta->ampdu_mlme.mtx);
for (tid = 0; tid < STA_TID_NUM; tid++) {
if (test_and_clear_bit(tid, sta->ampdu_mlme.tid_rx_timer_expired))
___ieee80211_stop_rx_ba_session(
sta, tid, WLAN_BACK_RECIPIENT,
WLAN_REASON_QSTA_TIMEOUT);
+ }
+ mutex_unlock(&sta->ampdu_mlme.mtx);
+ spin_lock_bh(&sta->lock);
+ for (tid = 0; tid < STA_TID_NUM; tid++) {
tid_tx = sta->ampdu_mlme.tid_tx[tid];
if (!tid_tx)
continue;
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 9f00d3f174e4..490be2f3af27 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -740,7 +740,7 @@ static void ieee80211_iface_work(struct work_struct *work)
mgmt->u.action.category == WLAN_CATEGORY_BACK) {
int len = skb->len;
- rcu_read_lock();
+ mutex_lock(&local->sta_mtx);
sta = sta_info_get(sdata, mgmt->sa);
if (sta) {
switch (mgmt->u.action.u.addba_req.action_code) {
@@ -761,7 +761,7 @@ static void ieee80211_iface_work(struct work_struct *work)
break;
}
}
- rcu_read_unlock();
+ mutex_unlock(&local->sta_mtx);
} else if (ieee80211_is_data_qos(mgmt->frame_control)) {
struct ieee80211_hdr *hdr = (void *)mgmt;
/*
@@ -781,7 +781,7 @@ static void ieee80211_iface_work(struct work_struct *work)
* a block-ack session was active. That cannot be
* right, so terminate the session.
*/
- rcu_read_lock();
+ mutex_lock(&local->sta_mtx);
sta = sta_info_get(sdata, mgmt->sa);
if (sta) {
u16 tid = *ieee80211_get_qos_ctl(hdr) &
@@ -791,7 +791,7 @@ static void ieee80211_iface_work(struct work_struct *work)
sta, tid, WLAN_BACK_RECIPIENT,
WLAN_REASON_QSTA_REQUIRE_SETUP);
}
- rcu_read_unlock();
+ mutex_unlock(&local->sta_mtx);
} else switch (sdata->vif.type) {
case NL80211_IFTYPE_STATION:
ieee80211_sta_rx_queued_mgmt(sdata, skb);
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index bd726c6204df..f54d8ba7d788 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -236,6 +236,7 @@ struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
spin_lock_init(&sta->flaglock);
INIT_WORK(&sta->drv_unblock_wk, sta_unblock);
INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work);
+ mutex_init(&sta->ampdu_mlme.mtx);
memcpy(sta->sta.addr, addr, ETH_ALEN);
sta->local = local;
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index 500bafe0a0bb..10d0fcb417ae 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -142,8 +142,11 @@ 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
+ * @mtx: mutex to protect all TX data (except non-NULL assignments
+ * to tid_tx[idx], which are protected by the sta spinlock)
*/
struct sta_ampdu_mlme {
+ struct mutex mtx;
/* rx */
struct tid_ampdu_rx *tid_rx[STA_TID_NUM];
unsigned long tid_rx_timer_expired[BITS_TO_LONGS(STA_TID_NUM)];
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