Queue frames pushed by mac80211 running mt7615_tx if the device is
low-power state. Run wake workqueue in order to swicth to full-power
before transmitting pending frames
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
.../net/wireless/mediatek/mt76/mt7615/init.c | 1 +
.../net/wireless/mediatek/mt76/mt7615/mac.c | 25 ++++++++-
.../net/wireless/mediatek/mt76/mt7615/main.c | 56 +++++++++++++++++--
.../wireless/mediatek/mt76/mt7615/mt7615.h | 6 ++
4 files changed, 81 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 59c59e8630c1..501726bfda24 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -450,6 +450,7 @@ void mt7615_init_device(struct mt7615_dev *dev)
INIT_DELAYED_WORK(&dev->pm.ps_work, mt7615_pm_power_save_work);
INIT_WORK(&dev->pm.wake_work, mt7615_pm_wake_work);
init_completion(&dev->pm.wake_cmpl);
+ spin_lock_init(&dev->pm.txq_lock);
INIT_DELAYED_WORK(&dev->phy.mac_work, mt7615_mac_work);
INIT_DELAYED_WORK(&dev->phy.scan_work, mt7615_scan_work);
skb_queue_head_init(&dev->phy.scan_event_list);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index e3dbbf957426..76751117592b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -1836,6 +1836,7 @@ void mt7615_pm_wake_work(struct work_struct *work)
{
struct mt7615_dev *dev;
struct mt76_phy *mphy;
+ int i;
dev = (struct mt7615_dev *)container_of(work, struct mt7615_dev,
pm.wake_work);
@@ -1846,8 +1847,28 @@ void mt7615_pm_wake_work(struct work_struct *work)
goto out;
}
+ spin_lock_bh(&dev->pm.txq_lock);
+ for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+ struct mt7615_sta *msta = dev->pm.tx_q[i].msta;
+ struct mt76_wcid *wcid = msta ? &msta->wcid : NULL;
+ struct ieee80211_sta *sta = NULL;
+
+ if (!dev->pm.tx_q[i].skb)
+ continue;
+
+ if (msta && wcid->sta)
+ sta = container_of((void *)msta, struct ieee80211_sta,
+ drv_priv);
+
+ mt76_tx(mphy, sta, wcid, dev->pm.tx_q[i].skb);
+ dev->pm.tx_q[i].skb = NULL;
+ }
+ spin_unlock_bh(&dev->pm.txq_lock);
+
tasklet_schedule(&dev->mt76.tx_tasklet);
+
out:
+ ieee80211_wake_queues(mphy->hw);
complete_all(&dev->pm.wake_cmpl);
}
@@ -1871,8 +1892,10 @@ int mt7615_pm_wake(struct mt7615_dev *dev)
if (queue_work(dev->mt76.wq, &dev->pm.wake_work))
reinit_completion(&dev->pm.wake_cmpl);
- if (!wait_for_completion_timeout(&dev->pm.wake_cmpl, 3 * HZ))
+ if (!wait_for_completion_timeout(&dev->pm.wake_cmpl, 3 * HZ)) {
+ ieee80211_wake_queues(mphy->hw);
return -ETIMEDOUT;
+ }
return 0;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index 3ff387f31659..57d5e3aa9439 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -24,6 +24,22 @@ static bool mt7615_dev_running(struct mt7615_dev *dev)
return phy && test_bit(MT76_STATE_RUNNING, &phy->mt76->state);
}
+static void mt7615_free_pending_tx_skbs(struct mt7615_dev *dev,
+ struct mt7615_sta *msta)
+{
+ int i;
+
+ spin_lock_bh(&dev->pm.txq_lock);
+ for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+ if (msta && dev->pm.tx_q[i].msta != msta)
+ continue;
+
+ dev_kfree_skb(dev->pm.tx_q[i].skb);
+ dev->pm.tx_q[i].skb = NULL;
+ }
+ spin_unlock_bh(&dev->pm.txq_lock);
+}
+
static int mt7615_start(struct ieee80211_hw *hw)
{
struct mt7615_dev *dev = mt7615_hw_dev(hw);
@@ -77,6 +93,8 @@ static void mt7615_stop(struct ieee80211_hw *hw)
cancel_delayed_work_sync(&dev->pm.ps_work);
cancel_work_sync(&dev->pm.wake_work);
+ mt7615_free_pending_tx_skbs(dev, NULL);
+
mt7615_mutex_acquire(dev);
mt76_testmode_reset(&dev->mt76, true);
@@ -214,6 +232,8 @@ static void mt7615_remove_interface(struct ieee80211_hw *hw,
if (vif == phy->monitor_vif)
phy->monitor_vif = NULL;
+ mt7615_free_pending_tx_skbs(dev, msta);
+
mt7615_mcu_add_dev_info(dev, vif, false);
rcu_assign_pointer(dev->mt76.wcid[idx], NULL);
@@ -595,6 +615,8 @@ void mt7615_mac_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
+ mt7615_free_pending_tx_skbs(dev, msta);
+
mt7615_mcu_sta_add(dev, vif, sta, false);
mt7615_mac_wtbl_update(dev, msta->wcid.idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
@@ -665,22 +687,43 @@ static void mt7615_tx(struct ieee80211_hw *hw,
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_vif *vif = info->control.vif;
struct mt76_wcid *wcid = &dev->mt76.global_wcid;
+ struct mt7615_sta *msta = NULL;
+ int qid;
if (control->sta) {
- struct mt7615_sta *sta;
-
- sta = (struct mt7615_sta *)control->sta->drv_priv;
- wcid = &sta->wcid;
+ msta = (struct mt7615_sta *)control->sta->drv_priv;
+ wcid = &msta->wcid;
}
if (vif && !control->sta) {
struct mt7615_vif *mvif;
mvif = (struct mt7615_vif *)vif->drv_priv;
- wcid = &mvif->sta.wcid;
+ msta = &mvif->sta;
+ wcid = &msta->wcid;
+ }
+
+ if (!test_bit(MT76_STATE_PM, &mphy->state)) {
+ mt76_tx(mphy, control->sta, wcid, skb);
+ return;
+ }
+
+ qid = skb_get_queue_mapping(skb);
+ if (qid >= MT_TXQ_PSD) {
+ qid = IEEE80211_AC_BE;
+ skb_set_queue_mapping(skb, qid);
}
- mt76_tx(mphy, control->sta, wcid, skb);
+ spin_lock_bh(&dev->pm.txq_lock);
+ if (!dev->pm.tx_q[qid].skb) {
+ ieee80211_stop_queues(hw);
+ dev->pm.tx_q[qid].msta = msta;
+ dev->pm.tx_q[qid].skb = skb;
+ queue_work(dev->mt76.wq, &dev->pm.wake_work);
+ } else {
+ dev_kfree_skb(skb);
+ }
+ spin_unlock_bh(&dev->pm.txq_lock);
}
static int mt7615_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
@@ -1059,6 +1102,7 @@ static int mt7615_suspend(struct ieee80211_hw *hw,
int err = 0;
cancel_delayed_work_sync(&dev->pm.ps_work);
+ mt7615_free_pending_tx_skbs(dev, NULL);
mt7615_mutex_acquire(dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
index ee02c45dfa9e..66489f44c1a9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
@@ -300,6 +300,12 @@ struct mt7615_dev {
#endif
struct {
+ spinlock_t txq_lock;
+ struct {
+ struct mt7615_sta *msta;
+ struct sk_buff *skb;
+ } tx_q[IEEE80211_NUM_ACS];
+
struct work_struct wake_work;
struct completion wake_cmpl;
--
2.26.2
