* [PATCH v3 1/2] mt76: mt7915: reset token when mac_reset happens
@ 2020-12-10 18:51 Ryder Lee
2020-12-10 18:51 ` [PATCH v3 2/2] mt76: mt7615: " Ryder Lee
0 siblings, 1 reply; 2+ messages in thread
From: Ryder Lee @ 2020-12-10 18:51 UTC (permalink / raw)
To: Felix Fietkau, Lorenzo Bianconi
Cc: Shayne Chen, linux-wireless, linux-mediatek, Ryder Lee
Reset buffering token in mt7915_mac_reset_work() to avoid possible leakege,
which leads to Tx stop after mac reset.
Tested-by: Bo Jiao <bo.jiao@mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
change since v3 - none
change since v2 - rebase on top of latest codebase
---
.../net/wireless/mediatek/mt76/mt7915/init.c | 18 +-------------
.../net/wireless/mediatek/mt76/mt7915/mac.c | 24 +++++++++++++++++++
.../wireless/mediatek/mt76/mt7915/mt7915.h | 1 +
3 files changed, 26 insertions(+), 17 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index ed4635bd151a..255ccd7e3d27 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -672,28 +672,12 @@ int mt7915_register_device(struct mt7915_dev *dev)
void mt7915_unregister_device(struct mt7915_dev *dev)
{
- struct mt76_txwi_cache *txwi;
- int id;
-
mt7915_unregister_ext_phy(dev);
mt76_unregister_device(&dev->mt76);
mt7915_mcu_exit(dev);
mt7915_dma_cleanup(dev);
- spin_lock_bh(&dev->token_lock);
- idr_for_each_entry(&dev->token, txwi, id) {
- mt7915_txp_skb_unmap(&dev->mt76, txwi);
- if (txwi->skb) {
- struct ieee80211_hw *hw;
-
- hw = mt76_tx_status_get_hw(&dev->mt76, txwi->skb);
- ieee80211_free_txskb(hw, txwi->skb);
- }
- mt76_put_txwi(&dev->mt76, txwi);
- dev->token_count--;
- }
- spin_unlock_bh(&dev->token_lock);
- idr_destroy(&dev->token);
+ mt7915_tx_token_put(dev);
mt76_free_device(&dev->mt76);
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index f504eeb221f9..1b4d65310b88 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -1485,6 +1485,27 @@ mt7915_dma_reset(struct mt7915_phy *phy)
MT_WFDMA1_GLO_CFG_TX_DMA_EN | MT_WFDMA1_GLO_CFG_RX_DMA_EN);
}
+void mt7915_tx_token_put(struct mt7915_dev *dev)
+{
+ struct mt76_txwi_cache *txwi;
+ int id;
+
+ spin_lock_bh(&dev->token_lock);
+ idr_for_each_entry(&dev->token, txwi, id) {
+ mt7915_txp_skb_unmap(&dev->mt76, txwi);
+ if (txwi->skb) {
+ struct ieee80211_hw *hw;
+
+ hw = mt76_tx_status_get_hw(&dev->mt76, txwi->skb);
+ ieee80211_free_txskb(hw, txwi->skb);
+ }
+ mt76_put_txwi(&dev->mt76, txwi);
+ dev->token_count--;
+ }
+ spin_unlock_bh(&dev->token_lock);
+ idr_destroy(&dev->token);
+}
+
/* system error recovery */
void mt7915_mac_reset_work(struct work_struct *work)
{
@@ -1525,6 +1546,9 @@ void mt7915_mac_reset_work(struct work_struct *work)
mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_DMA_STOPPED);
+ mt7915_tx_token_put(dev);
+ idr_init(&dev->token);
+
if (mt7915_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) {
mt7915_dma_reset(&dev->phy);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index 0339abf360d3..94bed8a3a050 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -463,6 +463,7 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
struct ieee80211_sta *sta,
struct mt76_tx_info *tx_info);
void mt7915_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
+void mt7915_tx_token_put(struct mt7915_dev *dev);
int mt7915_init_tx_queues(struct mt7915_phy *phy, int idx, int n_desc);
void mt7915_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb);
--
2.18.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH v3 2/2] mt76: mt7615: reset token when mac_reset happens
2020-12-10 18:51 [PATCH v3 1/2] mt76: mt7915: reset token when mac_reset happens Ryder Lee
@ 2020-12-10 18:51 ` Ryder Lee
0 siblings, 0 replies; 2+ messages in thread
From: Ryder Lee @ 2020-12-10 18:51 UTC (permalink / raw)
To: Felix Fietkau, Lorenzo Bianconi
Cc: Shayne Chen, linux-wireless, linux-mediatek, Ryder Lee
Reset token in mt7615_mac_reset_work() to avoid possible leakege.
Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
---
change since v3 - fix build error
change since v2 - rebase on top of latest codebase
---
.../net/wireless/mediatek/mt76/mt7615/mac.c | 19 +++++++++++++++++++
.../wireless/mediatek/mt76/mt7615/mt7615.h | 2 +-
.../wireless/mediatek/mt76/mt7615/pci_init.c | 12 +-----------
3 files changed, 21 insertions(+), 12 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index 0f360be0b885..1b4986dd3baa 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -2058,6 +2058,22 @@ void mt7615_dma_reset(struct mt7615_dev *dev)
}
EXPORT_SYMBOL_GPL(mt7615_dma_reset);
+void mt7615_tx_token_put(struct mt7615_dev *dev)
+{
+ struct mt76_txwi_cache *txwi;
+ int id;
+
+ spin_lock_bh(&dev->token_lock);
+ idr_for_each_entry(&dev->token, txwi, id) {
+ mt7615_txp_skb_unmap(&dev->mt76, txwi);
+ if (txwi->skb)
+ dev_kfree_skb_any(txwi->skb);
+ mt76_put_txwi(&dev->mt76, txwi);
+ }
+ spin_unlock_bh(&dev->token_lock);
+ idr_destroy(&dev->token);
+}
+
void mt7615_mac_reset_work(struct work_struct *work)
{
struct mt7615_phy *phy2;
@@ -2101,6 +2117,9 @@ void mt7615_mac_reset_work(struct work_struct *work)
mt76_wr(dev, MT_MCU_INT_EVENT, MT_MCU_INT_EVENT_PDMA_STOPPED);
+ mt7615_tx_token_put(dev);
+ idr_init(&dev->token);
+
if (mt7615_wait_reset_state(dev, MT_MCU_CMD_RESET_DONE)) {
mt7615_dma_reset(dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
index 99b8abdbb08f..d697ff2ea56e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h
@@ -583,7 +583,7 @@ int mt7615_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
struct mt76_tx_info *tx_info);
void mt7615_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
-
+void mt7615_tx_token_put(struct mt7615_dev *dev);
void mt7615_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
struct sk_buff *skb);
void mt7615_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
index 27fcb1374685..58a0ec1bf8d7 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci_init.c
@@ -160,9 +160,7 @@ int mt7615_register_device(struct mt7615_dev *dev)
void mt7615_unregister_device(struct mt7615_dev *dev)
{
- struct mt76_txwi_cache *txwi;
bool mcu_running;
- int id;
mcu_running = mt7615_wait_for_mcu_init(dev);
@@ -172,15 +170,7 @@ void mt7615_unregister_device(struct mt7615_dev *dev)
mt7615_mcu_exit(dev);
mt7615_dma_cleanup(dev);
- spin_lock_bh(&dev->token_lock);
- idr_for_each_entry(&dev->token, txwi, id) {
- mt7615_txp_skb_unmap(&dev->mt76, txwi);
- if (txwi->skb)
- dev_kfree_skb_any(txwi->skb);
- mt76_put_txwi(&dev->mt76, txwi);
- }
- spin_unlock_bh(&dev->token_lock);
- idr_destroy(&dev->token);
+ mt7615_tx_token_put(dev);
tasklet_disable(&dev->irq_tasklet);
--
2.18.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
end of thread, other threads:[~2020-12-10 18:53 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
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