From: Pablo de Lara Date: Wed, 16 Sep 2015 21:51:24 +0000 (+0100) Subject: ethdev: check queue state before starting or stopping X-Git-Tag: spdx-start~8118 X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=6b6861c171823dc5c3f2b3bbabc79e53066efb53;p=dpdk.git ethdev: check queue state before starting or stopping Following the same approach taken with dev_started field in rte_eth_dev_data structure, this patch adds two new fields in it, rx_queue_state and tx_queue_state arrays, which track which queues have been started and which not. This is important to avoid trying to start/stop twice a queue, which will result in undefined behaviour (which may cause RX/TX disruption). Mind that only the PMDs which have queue_start/stop functions have been changed to update this field, as the functions will check the queue state before switching it. Signed-off-by: Pablo de Lara Acked-by: Konstantin Ananyev --- diff --git a/drivers/net/cxgbe/cxgbe_ethdev.c b/drivers/net/cxgbe/cxgbe_ethdev.c index 788464252b..3ef787d8cc 100644 --- a/drivers/net/cxgbe/cxgbe_ethdev.c +++ b/drivers/net/cxgbe/cxgbe_ethdev.c @@ -405,23 +405,33 @@ static int cxgbe_dev_configure(struct rte_eth_dev *eth_dev) static int cxgbe_dev_tx_queue_start(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id) { + int ret; struct sge_eth_txq *txq = (struct sge_eth_txq *) (eth_dev->data->tx_queues[tx_queue_id]); dev_debug(NULL, "%s: tx_queue_id = %d\n", __func__, tx_queue_id); - return t4_sge_eth_txq_start(txq); + ret = t4_sge_eth_txq_start(txq); + if (ret == 0) + eth_dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; + + return ret; } static int cxgbe_dev_tx_queue_stop(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id) { + int ret; struct sge_eth_txq *txq = (struct sge_eth_txq *) (eth_dev->data->tx_queues[tx_queue_id]); dev_debug(NULL, "%s: tx_queue_id = %d\n", __func__, tx_queue_id); - return t4_sge_eth_txq_stop(txq); + ret = t4_sge_eth_txq_stop(txq); + if (ret == 0) + eth_dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; + + return ret; } static int cxgbe_dev_tx_queue_setup(struct rte_eth_dev *eth_dev, @@ -497,6 +507,7 @@ static void cxgbe_dev_tx_queue_release(void *q) static int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev, uint16_t rx_queue_id) { + int ret; struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private); struct adapter *adap = pi->adapter; struct sge_rspq *q; @@ -505,12 +516,18 @@ static int cxgbe_dev_rx_queue_start(struct rte_eth_dev *eth_dev, __func__, pi->port_id, rx_queue_id); q = eth_dev->data->rx_queues[rx_queue_id]; - return t4_sge_eth_rxq_start(adap, q); + + ret = t4_sge_eth_rxq_start(adap, q); + if (ret == 0) + eth_dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; + + return ret; } static int cxgbe_dev_rx_queue_stop(struct rte_eth_dev *eth_dev, uint16_t rx_queue_id) { + int ret; struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private); struct adapter *adap = pi->adapter; struct sge_rspq *q; @@ -519,7 +536,11 @@ static int cxgbe_dev_rx_queue_stop(struct rte_eth_dev *eth_dev, __func__, pi->port_id, rx_queue_id); q = eth_dev->data->rx_queues[rx_queue_id]; - return t4_sge_eth_rxq_stop(adap, q); + ret = t4_sge_eth_rxq_stop(adap, q); + if (ret == 0) + eth_dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; + + return ret; } static int cxgbe_dev_rx_queue_setup(struct rte_eth_dev *eth_dev, diff --git a/drivers/net/enic/enic_ethdev.c b/drivers/net/enic/enic_ethdev.c index 1e1a5da797..3888dbb12e 100644 --- a/drivers/net/enic/enic_ethdev.c +++ b/drivers/net/enic/enic_ethdev.c @@ -193,6 +193,7 @@ static int enicpmd_dev_tx_queue_start(struct rte_eth_dev *eth_dev, ENICPMD_FUNC_TRACE(); enic_start_wq(enic, queue_idx); + eth_dev->data->tx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STARTED; return 0; } @@ -208,6 +209,8 @@ static int enicpmd_dev_tx_queue_stop(struct rte_eth_dev *eth_dev, ret = enic_stop_wq(enic, queue_idx); if (ret) dev_err(enic, "error in stopping wq %d\n", queue_idx); + else + eth_dev->data->tx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STOPPED; return ret; } @@ -220,6 +223,7 @@ static int enicpmd_dev_rx_queue_start(struct rte_eth_dev *eth_dev, ENICPMD_FUNC_TRACE(); enic_start_rq(enic, queue_idx); + eth_dev->data->rx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STARTED; return 0; } @@ -235,6 +239,8 @@ static int enicpmd_dev_rx_queue_stop(struct rte_eth_dev *eth_dev, ret = enic_stop_rq(enic, queue_idx); if (ret) dev_err(enic, "error in stopping rq %d\n", queue_idx); + else + eth_dev->data->rx_queue_state[queue_idx] = RTE_ETH_QUEUE_STATE_STOPPED; return ret; } diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c index 5fc1e58368..cf7ada71ff 100644 --- a/drivers/net/fm10k/fm10k_ethdev.c +++ b/drivers/net/fm10k/fm10k_ethdev.c @@ -753,6 +753,7 @@ fm10k_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) */ FM10K_WRITE_REG(hw, FM10K_RDH(rx_queue_id), 0); FM10K_WRITE_REG(hw, FM10K_RDT(rx_queue_id), rxq->nb_desc - 1); + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; } return err; @@ -771,6 +772,7 @@ fm10k_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id) /* Free mbuf and clean HW ring */ rx_queue_clean(dev->data->rx_queues[rx_queue_id]); + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; } return 0; @@ -800,6 +802,7 @@ fm10k_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id) FM10K_WRITE_REG(hw, FM10K_TXDCTL(tx_queue_id), FM10K_TXDCTL_ENABLE | txdctl); FM10K_WRITE_FLUSH(hw); + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; } else err = -1; @@ -816,6 +819,7 @@ fm10k_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) if (tx_queue_id < dev->data->nb_tx_queues) { tx_queue_disable(hw, tx_queue_id); tx_queue_clean(dev->data->tx_queues[tx_queue_id]); + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; } return 0; diff --git a/drivers/net/i40e/i40e_ethdev_vf.c b/drivers/net/i40e/i40e_ethdev_vf.c index 615da8dff2..7ce8687f3e 100644 --- a/drivers/net/i40e/i40e_ethdev_vf.c +++ b/drivers/net/i40e/i40e_ethdev_vf.c @@ -1505,6 +1505,8 @@ i40evf_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) if (err) PMD_DRV_LOG(ERR, "Failed to switch RX queue %u on", rx_queue_id); + else + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; } return err; @@ -1529,6 +1531,7 @@ i40evf_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id) i40e_rx_queue_release_mbufs(rxq); i40e_reset_rx_queue(rxq); + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; } return 0; @@ -1549,6 +1552,8 @@ i40evf_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id) if (err) PMD_DRV_LOG(ERR, "Failed to switch TX queue %u on", tx_queue_id); + else + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; } return err; @@ -1573,6 +1578,7 @@ i40evf_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) i40e_tx_queue_release_mbufs(txq); i40e_reset_tx_queue(txq); + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; } return 0; diff --git a/drivers/net/i40e/i40e_rxtx.c b/drivers/net/i40e/i40e_rxtx.c index e45c8f32a4..b60c356c12 100644 --- a/drivers/net/i40e/i40e_rxtx.c +++ b/drivers/net/i40e/i40e_rxtx.c @@ -2006,7 +2006,8 @@ i40e_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) i40e_rx_queue_release_mbufs(rxq); i40e_reset_rx_queue(rxq); - } + } else + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; } return err; @@ -2035,6 +2036,7 @@ i40e_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id) } i40e_rx_queue_release_mbufs(rxq); i40e_reset_rx_queue(rxq); + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; } return 0; @@ -2060,6 +2062,8 @@ i40e_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id) if (err) PMD_DRV_LOG(ERR, "Failed to switch TX queue %u on", tx_queue_id); + else + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; } return err; @@ -2089,6 +2093,7 @@ i40e_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) i40e_tx_queue_release_mbufs(txq); i40e_reset_tx_queue(txq); + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; } return 0; diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c index 2ba10e4b92..55611950bc 100644 --- a/drivers/net/ixgbe/ixgbe_rxtx.c +++ b/drivers/net/ixgbe/ixgbe_rxtx.c @@ -4513,6 +4513,7 @@ ixgbe_dev_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) rte_wmb(); IXGBE_WRITE_REG(hw, IXGBE_RDH(rxq->reg_idx), 0); IXGBE_WRITE_REG(hw, IXGBE_RDT(rxq->reg_idx), rxq->nb_rx_desc - 1); + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; } else return -1; @@ -4556,6 +4557,7 @@ ixgbe_dev_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id) ixgbe_rx_queue_release_mbufs(rxq); ixgbe_reset_rx_queue(adapter, rxq); + dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; } else return -1; @@ -4598,6 +4600,7 @@ ixgbe_dev_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id) rte_wmb(); IXGBE_WRITE_REG(hw, IXGBE_TDH(txq->reg_idx), 0); IXGBE_WRITE_REG(hw, IXGBE_TDT(txq->reg_idx), 0); + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED; } else return -1; @@ -4658,6 +4661,7 @@ ixgbe_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) txq->ops->release_mbufs(txq); txq->ops->reset(txq); } + dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; } else return -1; diff --git a/lib/librte_ether/rte_ethdev.c b/lib/librte_ether/rte_ethdev.c index fcc9e0f49a..83704bb077 100644 --- a/lib/librte_ether/rte_ethdev.c +++ b/lib/librte_ether/rte_ethdev.c @@ -778,6 +778,13 @@ rte_eth_dev_rx_queue_start(uint8_t port_id, uint16_t rx_queue_id) FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_start, -ENOTSUP); + if (dev->data->rx_queue_state[rx_queue_id] != RTE_ETH_QUEUE_STATE_STOPPED) { + PMD_DEBUG_TRACE("Queue %" PRIu16" of device with port_id=%" PRIu8 + " already started\n", + rx_queue_id, port_id); + return 0; + } + return dev->dev_ops->rx_queue_start(dev, rx_queue_id); } @@ -801,6 +808,13 @@ rte_eth_dev_rx_queue_stop(uint8_t port_id, uint16_t rx_queue_id) FUNC_PTR_OR_ERR_RET(*dev->dev_ops->rx_queue_stop, -ENOTSUP); + if (dev->data->rx_queue_state[rx_queue_id] == RTE_ETH_QUEUE_STATE_STOPPED) { + PMD_DEBUG_TRACE("Queue %" PRIu16" of device with port_id=%" PRIu8 + " already stopped\n", + rx_queue_id, port_id); + return 0; + } + return dev->dev_ops->rx_queue_stop(dev, rx_queue_id); } @@ -824,6 +838,13 @@ rte_eth_dev_tx_queue_start(uint8_t port_id, uint16_t tx_queue_id) FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_queue_start, -ENOTSUP); + if (dev->data->tx_queue_state[tx_queue_id] != RTE_ETH_QUEUE_STATE_STOPPED) { + PMD_DEBUG_TRACE("Queue %" PRIu16" of device with port_id=%" PRIu8 + " already started\n", + tx_queue_id, port_id); + return 0; + } + return dev->dev_ops->tx_queue_start(dev, tx_queue_id); } @@ -847,6 +868,13 @@ rte_eth_dev_tx_queue_stop(uint8_t port_id, uint16_t tx_queue_id) FUNC_PTR_OR_ERR_RET(*dev->dev_ops->tx_queue_stop, -ENOTSUP); + if (dev->data->tx_queue_state[tx_queue_id] == RTE_ETH_QUEUE_STATE_STOPPED) { + PMD_DEBUG_TRACE("Queue %" PRIu16" of device with port_id=%" PRIu8 + " already stopped\n", + tx_queue_id, port_id); + return 0; + } + return dev->dev_ops->tx_queue_stop(dev, tx_queue_id); } diff --git a/lib/librte_ether/rte_ethdev.h b/lib/librte_ether/rte_ethdev.h index 4f7b64b9dc..eee11946a1 100644 --- a/lib/librte_ether/rte_ethdev.h +++ b/lib/librte_ether/rte_ethdev.h @@ -919,6 +919,12 @@ struct rte_eth_dcb_info { struct rte_eth_dcb_tc_queue_mapping tc_queue; }; +/** + * RX/TX queue states + */ +#define RTE_ETH_QUEUE_STATE_STOPPED 0 +#define RTE_ETH_QUEUE_STATE_STARTED 1 + struct rte_eth_dev; struct rte_eth_dev_callback; @@ -1553,6 +1559,10 @@ struct rte_eth_dev_data { all_multicast : 1, /**< RX all multicast mode ON(1) / OFF(0). */ dev_started : 1, /**< Device state: STARTED(1) / STOPPED(0). */ lro : 1; /**< RX LRO is ON(1) / OFF(0) */ + uint8_t rx_queue_state[RTE_MAX_QUEUES_PER_PORT]; + /** Queues state: STARTED(1) / STOPPED(0) */ + uint8_t tx_queue_state[RTE_MAX_QUEUES_PER_PORT]; + /** Queues state: STARTED(1) / STOPPED(0) */ uint32_t dev_flags; /**< Capabilities */ enum rte_kernel_driver kdrv; /**< Kernel driver passthrough */ int numa_node; /**< NUMA node connection */