From e6722dee533cda3756fbc5c9ea4ddfbf30276f1b Mon Sep 17 00:00:00 2001 From: Junjie Chen Date: Wed, 11 Apr 2018 13:02:32 -0400 Subject: [PATCH] net/vhost: fix invalid state dev_start sets *dev_attached* after setup queues, this sets device to invalid state since no frontend is attached. Also destroy_device set *started* to zero which makes *allow_queuing* always zero until dev_start get called again. Actually, we should not determine queues existence by *dev_attached* but by queues pointers or other separated variable(s). Fixes: 30a701a53737 ("net/vhost: fix crash when creating vdev dynamically") Cc: stable@dpdk.org Signed-off-by: Junjie Chen Tested-by: Jens Freimann Reviewed-by: Jianfeng Tan Reviewed-by: Maxime Coquelin --- drivers/net/vhost/rte_eth_vhost.c | 59 +++++++++++++++---------------- 1 file changed, 29 insertions(+), 30 deletions(-) diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c index 8f78fc932d..bd5e944572 100644 --- a/drivers/net/vhost/rte_eth_vhost.c +++ b/drivers/net/vhost/rte_eth_vhost.c @@ -561,10 +561,11 @@ update_queuing_status(struct rte_eth_dev *dev) unsigned int i; int allow_queuing = 1; - if (rte_atomic32_read(&internal->dev_attached) == 0) + if (!dev->data->rx_queues || !dev->data->tx_queues) return; - if (rte_atomic32_read(&internal->started) == 0) + if (rte_atomic32_read(&internal->started) == 0 || + rte_atomic32_read(&internal->dev_attached) == 0) allow_queuing = 0; /* Wait until rx/tx_pkt_burst stops accessing vhost device */ @@ -640,13 +641,10 @@ new_device(int vid) #endif internal->vid = vid; - if (eth_dev->data->rx_queues && eth_dev->data->tx_queues) { + if (rte_atomic32_read(&internal->started) == 1) queue_setup(eth_dev, internal); - rte_atomic32_set(&internal->dev_attached, 1); - } else { - RTE_LOG(INFO, PMD, "RX/TX queues have not setup yet\n"); - rte_atomic32_set(&internal->dev_attached, 0); - } + else + RTE_LOG(INFO, PMD, "RX/TX queues not exist yet\n"); for (i = 0; i < rte_vhost_get_vring_num(vid); i++) rte_vhost_enable_guest_notification(vid, i, 0); @@ -655,6 +653,7 @@ new_device(int vid) eth_dev->data->dev_link.link_status = ETH_LINK_UP; + rte_atomic32_set(&internal->dev_attached, 1); update_queuing_status(eth_dev); RTE_LOG(INFO, PMD, "Vhost device %d created\n", vid); @@ -684,23 +683,24 @@ destroy_device(int vid) eth_dev = list->eth_dev; internal = eth_dev->data->dev_private; - rte_atomic32_set(&internal->started, 0); - update_queuing_status(eth_dev); rte_atomic32_set(&internal->dev_attached, 0); + update_queuing_status(eth_dev); eth_dev->data->dev_link.link_status = ETH_LINK_DOWN; - for (i = 0; i < eth_dev->data->nb_rx_queues; i++) { - vq = eth_dev->data->rx_queues[i]; - if (vq == NULL) - continue; - vq->vid = -1; - } - for (i = 0; i < eth_dev->data->nb_tx_queues; i++) { - vq = eth_dev->data->tx_queues[i]; - if (vq == NULL) - continue; - vq->vid = -1; + if (eth_dev->data->rx_queues && eth_dev->data->tx_queues) { + for (i = 0; i < eth_dev->data->nb_rx_queues; i++) { + vq = eth_dev->data->rx_queues[i]; + if (!vq) + continue; + vq->vid = -1; + } + for (i = 0; i < eth_dev->data->nb_tx_queues; i++) { + vq = eth_dev->data->tx_queues[i]; + if (!vq) + continue; + vq->vid = -1; + } } state = vring_states[eth_dev->data->port_id]; @@ -825,11 +825,7 @@ eth_dev_start(struct rte_eth_dev *eth_dev) { struct pmd_internal *internal = eth_dev->data->dev_private; - if (unlikely(rte_atomic32_read(&internal->dev_attached) == 0)) { - queue_setup(eth_dev, internal); - rte_atomic32_set(&internal->dev_attached, 1); - } - + queue_setup(eth_dev, internal); rte_atomic32_set(&internal->started, 1); update_queuing_status(eth_dev); @@ -869,10 +865,13 @@ eth_dev_close(struct rte_eth_dev *dev) pthread_mutex_unlock(&internal_list_lock); rte_free(list); - for (i = 0; i < dev->data->nb_rx_queues; i++) - rte_free(dev->data->rx_queues[i]); - for (i = 0; i < dev->data->nb_tx_queues; i++) - rte_free(dev->data->tx_queues[i]); + if (dev->data->rx_queues) + for (i = 0; i < dev->data->nb_rx_queues; i++) + rte_free(dev->data->rx_queues[i]); + + if (dev->data->tx_queues) + for (i = 0; i < dev->data->nb_tx_queues; i++) + rte_free(dev->data->tx_queues[i]); rte_free(dev->data->mac_addrs); free(internal->dev_name); -- 2.20.1