When drv_tx calls race against local tx scheduling, the queue fill status checks
can potentially race, leading to dma queue entries being overwritten.
Fix this by deferring packets from drv_tx calls to the tx worker, in order to
ensure that all regular queue tx comes from the same context.
Reported-by: Ryder Lee <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mac80211.c | 50 +++++++-
drivers/net/wireless/mediatek/mt76/mt76.h | 24 ++--
.../net/wireless/mediatek/mt76/mt7603/main.c | 4 +-
.../net/wireless/mediatek/mt76/mt7615/main.c | 4 +-
.../net/wireless/mediatek/mt76/mt76x02_util.c | 4 +-
.../net/wireless/mediatek/mt76/mt7915/main.c | 4 +-
.../net/wireless/mediatek/mt76/mt7921/main.c | 2 +-
.../net/wireless/mediatek/mt76/mt792x_core.c | 2 +-
.../net/wireless/mediatek/mt76/mt7996/main.c | 4 +-
drivers/net/wireless/mediatek/mt76/tx.c | 108 ++++++++++++++----
10 files changed, 155 insertions(+), 51 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index db24634e4a08..8cd1a7ed82f4 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -415,6 +415,9 @@ mt76_phy_init(struct mt76_phy *phy, struct ieee80211_hw *hw)
struct mt76_dev *dev = phy->dev;
struct wiphy *wiphy = hw->wiphy;
+ INIT_LIST_HEAD(&phy->tx_list);
+ spin_lock_init(&phy->tx_lock);
+
SET_IEEE80211_DEV(hw, dev->dev);
SET_IEEE80211_PERM_ADDR(hw, phy->macaddr);
@@ -689,6 +692,7 @@ int mt76_register_device(struct mt76_dev *dev, bool vht,
int ret;
dev_set_drvdata(dev->dev, dev);
+ mt76_wcid_init(&dev->global_wcid);
ret = mt76_phy_init(phy, hw);
if (ret)
return ret;
@@ -744,6 +748,7 @@ void mt76_unregister_device(struct mt76_dev *dev)
if (IS_ENABLED(CONFIG_MT76_LEDS))
mt76_led_cleanup(&dev->phy);
mt76_tx_status_check(dev, true);
+ mt76_wcid_cleanup(dev, &dev->global_wcid);
ieee80211_unregister_hw(hw);
}
EXPORT_SYMBOL_GPL(mt76_unregister_device);
@@ -1412,7 +1417,7 @@ mt76_sta_add(struct mt76_phy *phy, struct ieee80211_vif *vif,
wcid->phy_idx = phy->band_idx;
rcu_assign_pointer(dev->wcid[wcid->idx], wcid);
- mt76_packet_id_init(wcid);
+ mt76_wcid_init(wcid);
out:
mutex_unlock(&dev->mutex);
@@ -1431,7 +1436,7 @@ void __mt76_sta_remove(struct mt76_dev *dev, struct ieee80211_vif *vif,
if (dev->drv->sta_remove)
dev->drv->sta_remove(dev, vif, sta);
- mt76_packet_id_flush(dev, wcid);
+ mt76_wcid_cleanup(dev, wcid);
mt76_wcid_mask_clear(dev->wcid_mask, idx);
mt76_wcid_mask_clear(dev->wcid_phy_mask, idx);
@@ -1487,6 +1492,47 @@ void mt76_sta_pre_rcu_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
}
EXPORT_SYMBOL_GPL(mt76_sta_pre_rcu_remove);
+void mt76_wcid_init(struct mt76_wcid *wcid)
+{
+ INIT_LIST_HEAD(&wcid->tx_list);
+ skb_queue_head_init(&wcid->tx_pending);
+
+ INIT_LIST_HEAD(&wcid->list);
+ idr_init(&wcid->pktid);
+}
+EXPORT_SYMBOL_GPL(mt76_wcid_init);
+
+void mt76_wcid_cleanup(struct mt76_dev *dev, struct mt76_wcid *wcid)
+{
+ struct mt76_phy *phy = dev->phys[wcid->phy_idx];
+ struct ieee80211_hw *hw;
+ struct sk_buff_head list;
+ struct sk_buff *skb;
+
+ mt76_tx_status_lock(dev, &list);
+ mt76_tx_status_skb_get(dev, wcid, -1, &list);
+ mt76_tx_status_unlock(dev, &list);
+
+ idr_destroy(&wcid->pktid);
+
+ spin_lock_bh(&phy->tx_lock);
+
+ if (!list_empty(&wcid->tx_list))
+ list_del_init(&wcid->tx_list);
+
+ spin_lock(&wcid->tx_pending.lock);
+ skb_queue_splice_tail_init(&wcid->tx_pending, &list);
+ spin_unlock(&wcid->tx_pending.lock);
+
+ spin_unlock_bh(&phy->tx_lock);
+
+ while ((skb = __skb_dequeue(&list)) != NULL) {
+ hw = mt76_tx_status_get_hw(dev, skb);
+ ieee80211_free_txskb(hw, skb);
+ }
+}
+EXPORT_SYMBOL_GPL(mt76_wcid_cleanup);
+
int mt76_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
int *dbm)
{
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index e8757865a3d0..9265e1b84b4f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -334,6 +334,9 @@ struct mt76_wcid {
u32 tx_info;
bool sw_iv;
+ struct list_head tx_list;
+ struct sk_buff_head tx_pending;
+
struct list_head list;
struct idr pktid;
@@ -719,6 +722,8 @@ struct mt76_phy {
unsigned long state;
u8 band_idx;
+ spinlock_t tx_lock;
+ struct list_head tx_list;
struct mt76_queue *q_tx[__MT_TXQ_MAX];
struct cfg80211_chan_def chandef;
@@ -1598,22 +1603,7 @@ mt76_token_put(struct mt76_dev *dev, int token)
return txwi;
}
-static inline void mt76_packet_id_init(struct mt76_wcid *wcid)
-{
- INIT_LIST_HEAD(&wcid->list);
- idr_init(&wcid->pktid);
-}
-
-static inline void
-mt76_packet_id_flush(struct mt76_dev *dev, struct mt76_wcid *wcid)
-{
- struct sk_buff_head list;
-
- mt76_tx_status_lock(dev, &list);
- mt76_tx_status_skb_get(dev, wcid, -1, &list);
- mt76_tx_status_unlock(dev, &list);
-
- idr_destroy(&wcid->pktid);
-}
+void mt76_wcid_init(struct mt76_wcid *wcid);
+void mt76_wcid_cleanup(struct mt76_dev *dev, struct mt76_wcid *wcid);
#endif
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/main.c b/drivers/net/wireless/mediatek/mt76/mt7603/main.c
index c213fd2a5216..89d738deea62 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/main.c
@@ -70,7 +70,7 @@ mt7603_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
mvif->sta.wcid.idx = idx;
mvif->sta.wcid.hw_key_idx = -1;
mvif->sta.vif = mvif;
- mt76_packet_id_init(&mvif->sta.wcid);
+ mt76_wcid_init(&mvif->sta.wcid);
eth_broadcast_addr(bc_addr);
mt7603_wtbl_init(dev, idx, mvif->idx, bc_addr);
@@ -110,7 +110,7 @@ mt7603_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
dev->mt76.vif_mask &= ~BIT_ULL(mvif->idx);
mutex_unlock(&dev->mt76.mutex);
- mt76_packet_id_flush(&dev->mt76, &mvif->sta.wcid);
+ mt76_wcid_cleanup(&dev->mt76, &mvif->sta.wcid);
}
void mt7603_init_edcca(struct mt7603_dev *dev)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/main.c b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
index 200b1752ca77..dab16b5fc386 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/main.c
@@ -226,7 +226,7 @@ static int mt7615_add_interface(struct ieee80211_hw *hw,
mvif->sta.wcid.idx = idx;
mvif->sta.wcid.phy_idx = mvif->mt76.band_idx;
mvif->sta.wcid.hw_key_idx = -1;
- mt76_packet_id_init(&mvif->sta.wcid);
+ mt76_wcid_init(&mvif->sta.wcid);
mt7615_mac_wtbl_update(dev, idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
@@ -279,7 +279,7 @@ static void mt7615_remove_interface(struct ieee80211_hw *hw,
list_del_init(&msta->wcid.poll_list);
spin_unlock_bh(&dev->mt76.sta_poll_lock);
- mt76_packet_id_flush(&dev->mt76, &mvif->sta.wcid);
+ mt76_wcid_cleanup(&dev->mt76, &mvif->sta.wcid);
}
int mt7615_set_channel(struct mt7615_phy *phy)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c
index dcbb5c605dfe..8a0e8124b894 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x02_util.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_util.c
@@ -288,7 +288,7 @@ mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif,
mvif->idx = idx;
mvif->group_wcid.idx = MT_VIF_WCID(idx);
mvif->group_wcid.hw_key_idx = -1;
- mt76_packet_id_init(&mvif->group_wcid);
+ mt76_wcid_init(&mvif->group_wcid);
mtxq = (struct mt76_txq *)vif->txq->drv_priv;
rcu_assign_pointer(dev->mt76.wcid[MT_VIF_WCID(idx)], &mvif->group_wcid);
@@ -346,7 +346,7 @@ void mt76x02_remove_interface(struct ieee80211_hw *hw,
dev->mt76.vif_mask &= ~BIT_ULL(mvif->idx);
rcu_assign_pointer(dev->mt76.wcid[mvif->group_wcid.idx], NULL);
- mt76_packet_id_flush(&dev->mt76, &mvif->group_wcid);
+ mt76_wcid_cleanup(&dev->mt76, &mvif->group_wcid);
}
EXPORT_SYMBOL_GPL(mt76x02_remove_interface);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index 8ebbf186fab2..55809d9f7a7b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -253,7 +253,7 @@ static int mt7915_add_interface(struct ieee80211_hw *hw,
mvif->sta.wcid.phy_idx = ext_phy;
mvif->sta.wcid.hw_key_idx = -1;
mvif->sta.wcid.tx_info |= MT_WCID_TX_INFO_SET;
- mt76_packet_id_init(&mvif->sta.wcid);
+ mt76_wcid_init(&mvif->sta.wcid);
mt7915_mac_wtbl_update(dev, idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
@@ -314,7 +314,7 @@ static void mt7915_remove_interface(struct ieee80211_hw *hw,
list_del_init(&msta->wcid.poll_list);
spin_unlock_bh(&dev->mt76.sta_poll_lock);
- mt76_packet_id_flush(&dev->mt76, &msta->wcid);
+ mt76_wcid_cleanup(&dev->mt76, &msta->wcid);
}
int mt7915_set_channel(struct mt7915_phy *phy)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
index 62e6da1386aa..571b82ed9293 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
@@ -315,7 +315,7 @@ mt7921_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
mvif->sta.wcid.phy_idx = mvif->mt76.band_idx;
mvif->sta.wcid.hw_key_idx = -1;
mvif->sta.wcid.tx_info |= MT_WCID_TX_INFO_SET;
- mt76_packet_id_init(&mvif->sta.wcid);
+ mt76_wcid_init(&mvif->sta.wcid);
mt7921_mac_wtbl_update(dev, idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_core.c b/drivers/net/wireless/mediatek/mt76/mt792x_core.c
index 46be7f996c7e..5648b7328b8c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt792x_core.c
+++ b/drivers/net/wireless/mediatek/mt76/mt792x_core.c
@@ -115,7 +115,7 @@ void mt792x_remove_interface(struct ieee80211_hw *hw,
list_del_init(&msta->wcid.poll_list);
spin_unlock_bh(&dev->mt76.sta_poll_lock);
- mt76_packet_id_flush(&dev->mt76, &msta->wcid);
+ mt76_wcid_cleanup(&dev->mt76, &msta->wcid);
}
EXPORT_SYMBOL_GPL(mt792x_remove_interface);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
index c3a479dc3f53..7947142f94b1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
@@ -207,7 +207,7 @@ static int mt7996_add_interface(struct ieee80211_hw *hw,
mvif->sta.wcid.phy_idx = band_idx;
mvif->sta.wcid.hw_key_idx = -1;
mvif->sta.wcid.tx_info |= MT_WCID_TX_INFO_SET;
- mt76_packet_id_init(&mvif->sta.wcid);
+ mt76_wcid_init(&mvif->sta.wcid);
mt7996_mac_wtbl_update(dev, idx,
MT_WTBL_UPDATE_ADM_COUNT_CLEAR);
@@ -268,7 +268,7 @@ static void mt7996_remove_interface(struct ieee80211_hw *hw,
list_del_init(&msta->wcid.poll_list);
spin_unlock_bh(&dev->mt76.sta_poll_lock);
- mt76_packet_id_flush(&dev->mt76, &msta->wcid);
+ mt76_wcid_cleanup(&dev->mt76, &msta->wcid);
}
int mt7996_set_channel(struct mt7996_phy *phy)
diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index 6cc26cc6c517..1809b03292c3 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -329,40 +329,32 @@ void
mt76_tx(struct mt76_phy *phy, struct ieee80211_sta *sta,
struct mt76_wcid *wcid, struct sk_buff *skb)
{
- struct mt76_dev *dev = phy->dev;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct mt76_queue *q;
- int qid = skb_get_queue_mapping(skb);
if (mt76_testmode_enabled(phy)) {
ieee80211_free_txskb(phy->hw, skb);
return;
}
- if (WARN_ON(qid >= MT_TXQ_PSD)) {
- qid = MT_TXQ_BE;
- skb_set_queue_mapping(skb, qid);
- }
-
- if ((dev->drv->drv_flags & MT_DRV_HW_MGMT_TXQ) &&
- !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
- !ieee80211_is_data(hdr->frame_control) &&
- !ieee80211_is_bufferable_mmpdu(skb)) {
- qid = MT_TXQ_PSD;
- }
+ if (WARN_ON(skb_get_queue_mapping(skb) >= MT_TXQ_PSD))
+ skb_set_queue_mapping(skb, MT_TXQ_BE);
if (wcid && !(wcid->tx_info & MT_WCID_TX_INFO_SET))
ieee80211_get_tx_rates(info->control.vif, sta, skb,
info->control.rates, 1);
info->hw_queue |= FIELD_PREP(MT_TX_HW_QUEUE_PHY, phy->band_idx);
- q = phy->q_tx[qid];
- spin_lock_bh(&q->lock);
- __mt76_tx_queue_skb(phy, qid, skb, wcid, sta, NULL);
- dev->queue_ops->kick(dev, q);
- spin_unlock_bh(&q->lock);
+ spin_lock_bh(&wcid->tx_pending.lock);
+ __skb_queue_tail(&wcid->tx_pending, skb);
+ spin_unlock_bh(&wcid->tx_pending.lock);
+
+ spin_lock_bh(&phy->tx_lock);
+ if (list_empty(&wcid->tx_list))
+ list_add_tail(&wcid->tx_list, &phy->tx_list);
+ spin_unlock_bh(&phy->tx_lock);
+
+ mt76_worker_schedule(&phy->dev->tx_worker);
}
EXPORT_SYMBOL_GPL(mt76_tx);
@@ -593,10 +585,86 @@ void mt76_txq_schedule(struct mt76_phy *phy, enum mt76_txq_id qid)
}
EXPORT_SYMBOL_GPL(mt76_txq_schedule);
+static int
+mt76_txq_schedule_pending_wcid(struct mt76_phy *phy, struct mt76_wcid *wcid)
+{
+ struct mt76_dev *dev = phy->dev;
+ struct ieee80211_sta *sta;
+ struct mt76_queue *q;
+ struct sk_buff *skb;
+ int ret = 0;
+
+ spin_lock(&wcid->tx_pending.lock);
+ while ((skb = skb_peek(&wcid->tx_pending)) != NULL) {
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ int qid = skb_get_queue_mapping(skb);
+
+ if ((dev->drv->drv_flags & MT_DRV_HW_MGMT_TXQ) &&
+ !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
+ !ieee80211_is_data(hdr->frame_control) &&
+ !ieee80211_is_bufferable_mmpdu(skb))
+ qid = MT_TXQ_PSD;
+
+ q = phy->q_tx[qid];
+ if (mt76_txq_stopped(q)) {
+ ret = -1;
+ break;
+ }
+
+ __skb_unlink(skb, &wcid->tx_pending);
+ spin_unlock(&wcid->tx_pending.lock);
+
+ sta = wcid_to_sta(wcid);
+ spin_lock(&q->lock);
+ __mt76_tx_queue_skb(phy, qid, skb, wcid, sta, NULL);
+ dev->queue_ops->kick(dev, q);
+ spin_unlock(&q->lock);
+
+ spin_lock(&wcid->tx_pending.lock);
+ }
+ spin_unlock(&wcid->tx_pending.lock);
+
+ return ret;
+}
+
+static void mt76_txq_schedule_pending(struct mt76_phy *phy)
+{
+ if (list_empty(&phy->tx_list))
+ return;
+
+ local_bh_disable();
+ rcu_read_lock();
+
+ spin_lock(&phy->tx_lock);
+ while (!list_empty(&phy->tx_list)) {
+ struct mt76_wcid *wcid = NULL;
+ int ret;
+
+ wcid = list_first_entry(&phy->tx_list, struct mt76_wcid, tx_list);
+ list_del_init(&wcid->tx_list);
+
+ spin_unlock(&phy->tx_lock);
+ ret = mt76_txq_schedule_pending_wcid(phy, wcid);
+ spin_lock(&phy->tx_lock);
+
+ if (ret) {
+ if (list_empty(&wcid->tx_list))
+ list_add_tail(&wcid->tx_list, &phy->tx_list);
+ break;
+ }
+ }
+ spin_unlock(&phy->tx_lock);
+
+ rcu_read_unlock();
+ local_bh_enable();
+}
+
void mt76_txq_schedule_all(struct mt76_phy *phy)
{
int i;
+ mt76_txq_schedule_pending(phy);
for (i = 0; i <= MT_TXQ_BK; i++)
mt76_txq_schedule(phy, i);
}
--
2.41.0
The error handling code was added in order to allow tx enqueue to fail after
calling .tx_prepare_skb. Since this can no longer happen, the error handling
code is unused.
Signed-off-by: Felix Fietkau <[email protected]>
---
drivers/net/wireless/mediatek/mt76/dma.c | 3 ---
.../net/wireless/mediatek/mt76/mt7615/pci_mac.c | 2 +-
.../wireless/mediatek/mt76/mt76_connac_mac.c | 17 -----------------
drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 2 +-
.../net/wireless/mediatek/mt76/mt7921/pci_mac.c | 2 +-
drivers/net/wireless/mediatek/mt76/mt7996/mac.c | 2 +-
6 files changed, 4 insertions(+), 24 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c
index 05d9ab3ce819..6a6af1d3d687 100644
--- a/drivers/net/wireless/mediatek/mt76/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/dma.c
@@ -330,9 +330,6 @@ mt76_dma_tx_cleanup_idx(struct mt76_dev *dev, struct mt76_queue *q, int idx,
if (e->txwi == DMA_DUMMY_DATA)
e->txwi = NULL;
- if (e->skb == DMA_DUMMY_DATA)
- e->skb = NULL;
-
*prev_e = *e;
memset(e, 0, sizeof(*e));
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c
index 0019890fdb78..fbb1181c58ff 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c
@@ -106,7 +106,7 @@ int mt7615_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
else
mt76_connac_write_hw_txp(mdev, tx_info, txp, id);
- tx_info->skb = DMA_DUMMY_DATA;
+ tx_info->skb = NULL;
return 0;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
index ee5177fd6dde..73db9e14db06 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
@@ -151,23 +151,6 @@ void mt76_connac_tx_complete_skb(struct mt76_dev *mdev,
return;
}
- /* error path */
- if (e->skb == DMA_DUMMY_DATA) {
- struct mt76_connac_txp_common *txp;
- struct mt76_txwi_cache *t;
- u16 token;
-
- txp = mt76_connac_txwi_to_txp(mdev, e->txwi);
- if (is_mt76_fw_txp(mdev))
- token = le16_to_cpu(txp->fw.token);
- else
- token = le16_to_cpu(txp->hw.msdu_id[0]) &
- ~MT_MSDU_ID_VALID;
-
- t = mt76_token_put(mdev, token);
- e->skb = t ? t->skb : NULL;
- }
-
if (e->skb)
mt76_tx_complete_skb(mdev, e->wcid, e->skb);
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index b8b0c0fda752..2222fb9aa103 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -809,7 +809,7 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
txp->rept_wds_wcid = cpu_to_le16(wcid->idx);
else
txp->rept_wds_wcid = cpu_to_le16(0x3ff);
- tx_info->skb = DMA_DUMMY_DATA;
+ tx_info->skb = NULL;
/* pass partial skb header to fw */
tx_info->buf[1].len = MT_CT_PARSE_LEN;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c
index e7a995e7e70a..c866144ff061 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c
@@ -48,7 +48,7 @@ int mt7921e_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
memset(txp, 0, sizeof(struct mt76_connac_hw_txp));
mt76_connac_write_hw_txp(mdev, tx_info, txp, id);
- tx_info->skb = DMA_DUMMY_DATA;
+ tx_info->skb = NULL;
return 0;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
index ac8759febe48..0eebf915df26 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
@@ -995,7 +995,7 @@ int mt7996_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
txp->fw.rept_wds_wcid = cpu_to_le16(wcid->idx);
else
txp->fw.rept_wds_wcid = cpu_to_le16(0xfff);
- tx_info->skb = DMA_DUMMY_DATA;
+ tx_info->skb = NULL;
/* pass partial skb header to fw */
tx_info->buf[1].len = MT_CT_PARSE_LEN;
--
2.41.0