From 18da3c854bb8105818dc23c36eecf3465596052a Mon Sep 17 00:00:00 2001 From: Chengchang Tang Date: Sat, 10 Apr 2021 09:11:19 +0800 Subject: [PATCH] net/hns3: fix queue state when concurrent with reset At the end of the reset, the state of queues need to be restored according to the states saved in the driver. If the start and stop operations of the queues are concurrent at this time, it may cause the final status to be uncertain. This patch requires queues to acquire the hw lock before starting and stopping. If the device is being restored due to reset at this time, it will block until the reset is completed. Fixes: fa29fe45a7b4 ("net/hns3: support queue start and stop") Cc: stable@dpdk.org Signed-off-by: Chengchang Tang Signed-off-by: Min Hu (Connor) --- drivers/net/hns3/hns3_rxtx.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c index 469d8de5df..19adf001a9 100644 --- a/drivers/net/hns3/hns3_rxtx.c +++ b/drivers/net/hns3/hns3_rxtx.c @@ -4287,10 +4287,12 @@ hns3_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) if (!hns3_dev_indep_txrx_supported(hw)) return -ENOTSUP; + rte_spinlock_lock(&hw->lock); 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.", rx_queue_id, ret); + rte_spinlock_unlock(&hw->lock); return ret; } @@ -4298,11 +4300,13 @@ hns3_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) if (ret) { hns3_err(hw, "fail to init Rx queue %u, ret = %d.", rx_queue_id, ret); + rte_spinlock_unlock(&hw->lock); return ret; } hns3_enable_rxq(rxq, true); dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; + rte_spinlock_unlock(&hw->lock); return ret; } @@ -4329,12 +4333,14 @@ hns3_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id) if (!hns3_dev_indep_txrx_supported(hw)) return -ENOTSUP; + rte_spinlock_lock(&hw->lock); hns3_enable_rxq(rxq, false); hns3_rx_queue_release_mbufs(rxq); hns3_reset_sw_rxq(rxq); dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; + rte_spinlock_unlock(&hw->lock); return 0; } @@ -4349,16 +4355,19 @@ hns3_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id) if (!hns3_dev_indep_txrx_supported(hw)) return -ENOTSUP; + rte_spinlock_lock(&hw->lock); 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.", tx_queue_id, ret); + rte_spinlock_unlock(&hw->lock); return ret; } hns3_init_txq(txq); hns3_enable_txq(txq, true); dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; + rte_spinlock_unlock(&hw->lock); return ret; } @@ -4372,6 +4381,7 @@ hns3_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) if (!hns3_dev_indep_txrx_supported(hw)) return -ENOTSUP; + rte_spinlock_lock(&hw->lock); hns3_enable_txq(txq, false); hns3_tx_queue_release_mbufs(txq); /* @@ -4383,6 +4393,7 @@ hns3_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) */ hns3_init_txq(txq); dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; + rte_spinlock_unlock(&hw->lock); return 0; } -- 2.20.1