patches for DPDK stable branches
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From: Dongdong Liu <liudongdong3@huawei.com>
To: <dev@dpdk.org>, <ferruh.yigit@amd.com>, <thomas@monjalon.net>,
	<andrew.rybchenko@oktetlabs.ru>, <fengchengwen@huawei.com>
Cc: <stable@dpdk.org>, <lihuisong@huawei.com>,
	<liudongdong3@huawei.com>, <yisen.zhuang@huawei.com>,
	<huangdengdui@huawei.com>
Subject: [PATCH v2 05/11] net/hns3: fix mbuf leak when start rxq in resetting
Date: Fri, 2 Jun 2023 19:41:59 +0800	[thread overview]
Message-ID: <20230602114205.29589-6-liudongdong3@huawei.com> (raw)
In-Reply-To: <20230602114205.29589-1-liudongdong3@huawei.com>

From: Chengwen Feng <fengchengwen@huawei.com>

In the reset restore-conf phase, the reset process will allocate for
the Rx ring mbufs unconditionlly.

And the rte_eth_dev_rx_queue_start() will also allocate for the Rx ring
mbufs unconditionlly.

So if the rte_eth_dev_rx_queue_start() is invoked before restore-conf
phase, then the mbufs allocated by rte_eth_dev_rx_queue_start() will
leak.

Because the hw->reset.resetting was always true during the phases from
stop-service to restore-conf, so fix it by returning an error if the
hw->reset.resetting is set.

This patch adds the above logic in both rx_queue_start/rx_queue_stop/
tx_queue_start/tx_queue_stop ops.

Fixes: fa29fe45a7b4 ("net/hns3: support queue start and stop")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Dongdong Liu <liudongdong3@huawei.com>
---
 drivers/net/hns3/hns3_rxtx.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
index 6468da903e..2bfc5507e3 100644
--- a/drivers/net/hns3/hns3_rxtx.c
+++ b/drivers/net/hns3/hns3_rxtx.c
@@ -4523,6 +4523,13 @@ hns3_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 		return -ENOTSUP;
 
 	rte_spinlock_lock(&hw->lock);
+
+	if (__atomic_load_n(&hw->reset.resetting, __ATOMIC_RELAXED)) {
+		hns3_err(hw, "fail to start Rx queue during resetting.");
+		rte_spinlock_unlock(&hw->lock);
+		return -EIO;
+	}
+
 	ret = hns3_reset_queue(hw, rx_queue_id, HNS3_RING_TYPE_RX);
 	if (ret) {
 		hns3_err(hw, "fail to reset Rx queue %u, ret = %d.",
@@ -4569,6 +4576,13 @@ hns3_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
 		return -ENOTSUP;
 
 	rte_spinlock_lock(&hw->lock);
+
+	if (__atomic_load_n(&hw->reset.resetting, __ATOMIC_RELAXED)) {
+		hns3_err(hw, "fail to stop Rx queue during resetting.");
+		rte_spinlock_unlock(&hw->lock);
+		return -EIO;
+	}
+
 	hns3_enable_rxq(rxq, false);
 
 	hns3_rx_queue_release_mbufs(rxq);
@@ -4591,6 +4605,13 @@ hns3_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 		return -ENOTSUP;
 
 	rte_spinlock_lock(&hw->lock);
+
+	if (__atomic_load_n(&hw->reset.resetting, __ATOMIC_RELAXED)) {
+		hns3_err(hw, "fail to start Tx queue during resetting.");
+		rte_spinlock_unlock(&hw->lock);
+		return -EIO;
+	}
+
 	ret = hns3_reset_queue(hw, tx_queue_id, HNS3_RING_TYPE_TX);
 	if (ret) {
 		hns3_err(hw, "fail to reset Tx queue %u, ret = %d.",
@@ -4617,6 +4638,13 @@ hns3_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
 		return -ENOTSUP;
 
 	rte_spinlock_lock(&hw->lock);
+
+	if (__atomic_load_n(&hw->reset.resetting, __ATOMIC_RELAXED)) {
+		hns3_err(hw, "fail to stop Tx queue during resetting.");
+		rte_spinlock_unlock(&hw->lock);
+		return -EIO;
+	}
+
 	hns3_enable_txq(txq, false);
 	hns3_tx_queue_release_mbufs(txq);
 	/*
-- 
2.22.0


  parent reply	other threads:[~2023-06-02 11:44 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-29 13:09 [PATCH 00/11] net/hns3: add some bugfixes for hns3 Dongdong Liu
2023-05-29 13:09 ` [PATCH 01/11] net/hns3: fix uninitialized RTC time Dongdong Liu
2023-06-02  9:00   ` Ferruh Yigit
2023-06-02 10:55     ` Dongdong Liu
2023-05-29 13:09 ` [PATCH 02/11] net/hns3: fix unenabled RTC time after reset Dongdong Liu
2023-05-29 13:09 ` [PATCH 03/11] net/hns3: add the uninitialization process of PTP Dongdong Liu
2023-05-29 13:09 ` [PATCH 04/11] net/hns3: extract a PTP header file Dongdong Liu
2023-05-29 13:09 ` [PATCH 05/11] net/hns3: fix mbuf leak when start rxq in resetting Dongdong Liu
2023-05-29 13:09 ` [PATCH 06/11] net/hns3: fix mbuf leak when start rxq after resetting Dongdong Liu
2023-05-29 13:09 ` [PATCH 07/11] net/hns3: fix no errcode returned when failed to init queue Dongdong Liu
2023-05-29 13:09 ` [PATCH 08/11] net/hns3: fix uninitialized variable Dongdong Liu
2023-05-29 13:09 ` [PATCH 09/11] net/hns3: make code more clean Dongdong Liu
2023-05-29 13:09 ` [PATCH 10/11] net/hns3: fix inaccurate log Dongdong Liu
2023-05-29 13:09 ` [PATCH 11/11] net/hns3: remove log redundant line break Dongdong Liu
2023-06-02 10:52 ` [PATCH 00/11] net/hns3: add some bugfixes for hns3 Ferruh Yigit
2023-06-02 11:41 ` [PATCH v2 " Dongdong Liu
2023-06-02 11:41   ` [PATCH v2 01/11] net/hns3: fix uninitialized RTC time Dongdong Liu
2023-06-02 11:41   ` [PATCH v2 02/11] net/hns3: fix unenabled RTC time after reset Dongdong Liu
2023-06-02 11:41   ` [PATCH v2 03/11] net/hns3: add the uninitialization process of PTP Dongdong Liu
2023-06-02 11:41   ` [PATCH v2 04/11] net/hns3: extract a PTP header file Dongdong Liu
2023-06-02 11:41   ` Dongdong Liu [this message]
2023-06-02 11:42   ` [PATCH v2 06/11] net/hns3: fix mbuf leak when start rxq after resetting Dongdong Liu
2023-06-02 11:42   ` [PATCH v2 07/11] net/hns3: fix no errcode returned when failed to init queue Dongdong Liu
2023-06-02 11:42   ` [PATCH v2 08/11] net/hns3: fix uninitialized variable Dongdong Liu
2023-06-02 11:42   ` [PATCH v2 09/11] net/hns3: make code more clean Dongdong Liu
2023-06-02 11:42   ` [PATCH v2 10/11] net/hns3: fix inaccurate log Dongdong Liu
2023-06-02 11:42   ` [PATCH v2 11/11] net/hns3: remove log redundant line break Dongdong Liu
2023-06-02 13:51   ` [PATCH v2 00/11] net/hns3: add some bugfixes for hns3 Ferruh Yigit

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