From: Itsuro Oda Date: Thu, 6 Feb 2020 01:39:34 +0000 (+0900) Subject: net/vhost: delay driver setup X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=3d01b759d267;p=dpdk.git net/vhost: delay driver setup Vhost driver setup is delayed at eth_dev configuration in order to be able to set it from a secondary process. Fixes: 4852aa8f6e21 ("drivers/net: enable hotplug on secondary process") Cc: stable@dpdk.org Signed-off-by: Itsuro Oda Reviewed-by: Maxime Coquelin --- diff --git a/drivers/net/vhost/rte_eth_vhost.c b/drivers/net/vhost/rte_eth_vhost.c index cea2ead2da..d7bba5c6e2 100644 --- a/drivers/net/vhost/rte_eth_vhost.c +++ b/drivers/net/vhost/rte_eth_vhost.c @@ -97,6 +97,8 @@ struct pmd_internal { rte_atomic32_t dev_attached; char *dev_name; char *iface_name; + uint64_t flags; + uint64_t disable_flags; uint16_t max_queues; int vid; rte_atomic32_t started; @@ -491,17 +493,6 @@ out: return nb_tx; } -static int -eth_dev_configure(struct rte_eth_dev *dev __rte_unused) -{ - struct pmd_internal *internal = dev->data->dev_private; - const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; - - internal->vlan_strip = !!(rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP); - - return 0; -} - static inline struct internal_list * find_internal_resource(char *ifname) { @@ -877,6 +868,62 @@ static struct vhost_device_ops vhost_ops = { .vring_state_changed = vring_state_changed, }; +static int +vhost_driver_setup(struct rte_eth_dev *eth_dev) +{ + struct pmd_internal *internal = eth_dev->data->dev_private; + struct internal_list *list = NULL; + struct rte_vhost_vring_state *vring_state = NULL; + unsigned int numa_node = eth_dev->device->numa_node; + const char *name = eth_dev->device->name; + + list = rte_zmalloc_socket(name, sizeof(*list), 0, numa_node); + if (list == NULL) + goto error; + + vring_state = rte_zmalloc_socket(name, sizeof(*vring_state), + 0, numa_node); + if (vring_state == NULL) + goto error; + + list->eth_dev = eth_dev; + pthread_mutex_lock(&internal_list_lock); + TAILQ_INSERT_TAIL(&internal_list, list, next); + pthread_mutex_unlock(&internal_list_lock); + + rte_spinlock_init(&vring_state->lock); + vring_states[eth_dev->data->port_id] = vring_state; + + if (rte_vhost_driver_register(internal->iface_name, internal->flags)) + goto error; + + if (internal->disable_flags) { + if (rte_vhost_driver_disable_features(internal->iface_name, + internal->disable_flags)) + goto error; + } + + if (rte_vhost_driver_callback_register(internal->iface_name, + &vhost_ops) < 0) { + VHOST_LOG(ERR, "Can't register callbacks\n"); + goto error; + } + + if (rte_vhost_driver_start(internal->iface_name) < 0) { + VHOST_LOG(ERR, "Failed to start driver for %s\n", + internal->iface_name); + goto error; + } + + return 0; + +error: + rte_free(vring_state); + rte_free(list); + + return -1; +} + int rte_eth_vhost_get_queue_event(uint16_t port_id, struct rte_eth_vhost_queue_event *event) @@ -943,6 +990,24 @@ rte_eth_vhost_get_vid_from_port_id(uint16_t port_id) return vid; } +static int +eth_dev_configure(struct rte_eth_dev *dev) +{ + struct pmd_internal *internal = dev->data->dev_private; + const struct rte_eth_rxmode *rxmode = &dev->data->dev_conf.rxmode; + + /* NOTE: the same process has to operate a vhost interface + * from beginning to end (from eth_dev configure to eth_dev close). + * It is user's responsibility at the moment. + */ + if (vhost_driver_setup(dev) < 0) + return -1; + + internal->vlan_strip = !!(rxmode->offloads & DEV_RX_OFFLOAD_VLAN_STRIP); + + return 0; +} + static int eth_dev_start(struct rte_eth_dev *eth_dev) { @@ -1219,16 +1284,10 @@ eth_dev_vhost_create(struct rte_vdev_device *dev, char *iface_name, struct pmd_internal *internal = NULL; struct rte_eth_dev *eth_dev = NULL; struct rte_ether_addr *eth_addr = NULL; - struct rte_vhost_vring_state *vring_state = NULL; - struct internal_list *list = NULL; VHOST_LOG(INFO, "Creating VHOST-USER backend on numa socket %u\n", numa_node); - list = rte_zmalloc_socket(name, sizeof(*list), 0, numa_node); - if (list == NULL) - goto error; - /* reserve an ethdev entry */ eth_dev = rte_eth_vdev_allocate(dev, sizeof(*internal)); if (eth_dev == NULL) @@ -1242,11 +1301,6 @@ eth_dev_vhost_create(struct rte_vdev_device *dev, char *iface_name, *eth_addr = base_eth_addr; eth_addr->addr_bytes[5] = eth_dev->data->port_id; - vring_state = rte_zmalloc_socket(name, - sizeof(*vring_state), 0, numa_node); - if (vring_state == NULL) - goto error; - /* now put it all together * - store queue data in internal, * - point eth_dev_data to internals @@ -1262,18 +1316,12 @@ eth_dev_vhost_create(struct rte_vdev_device *dev, char *iface_name, goto error; strcpy(internal->iface_name, iface_name); - list->eth_dev = eth_dev; - pthread_mutex_lock(&internal_list_lock); - TAILQ_INSERT_TAIL(&internal_list, list, next); - pthread_mutex_unlock(&internal_list_lock); - - rte_spinlock_init(&vring_state->lock); - vring_states[eth_dev->data->port_id] = vring_state; - data->nb_rx_queues = queues; data->nb_tx_queues = queues; internal->max_queues = queues; internal->vid = -1; + internal->flags = flags; + internal->disable_flags = disable_flags; data->dev_link = pmd_link; data->dev_flags = RTE_ETH_DEV_INTR_LSC | RTE_ETH_DEV_CLOSE_REMOVE; @@ -1283,26 +1331,6 @@ eth_dev_vhost_create(struct rte_vdev_device *dev, char *iface_name, eth_dev->rx_pkt_burst = eth_vhost_rx; eth_dev->tx_pkt_burst = eth_vhost_tx; - if (rte_vhost_driver_register(iface_name, flags)) - goto error; - - if (disable_flags) { - if (rte_vhost_driver_disable_features(iface_name, - disable_flags)) - goto error; - } - - if (rte_vhost_driver_callback_register(iface_name, &vhost_ops) < 0) { - VHOST_LOG(ERR, "Can't register callbacks\n"); - goto error; - } - - if (rte_vhost_driver_start(iface_name) < 0) { - VHOST_LOG(ERR, "Failed to start driver for %s\n", - iface_name); - goto error; - } - rte_eth_dev_probing_finish(eth_dev); return 0; @@ -1311,9 +1339,7 @@ error: rte_free(internal->iface_name); free(internal->dev_name); } - rte_free(vring_state); rte_eth_dev_release_port(eth_dev); - rte_free(list); return -1; }