From 23d8e85e44a5c30b7705c7ab90a4bff7d28015e5 Mon Sep 17 00:00:00 2001 From: Yunjian Wang Date: Tue, 29 Sep 2020 01:14:28 +0200 Subject: [PATCH] net/tap: release port upon close The flag RTE_ETH_DEV_CLOSE_REMOVE is set so all port resources can be freed by rte_eth_dev_close(). Freeing of private port resources is moved from the ".remove(device)" to the ".dev_close(port)" operation. Signed-off-by: Yunjian Wang Signed-off-by: Thomas Monjalon Acked-by: Stephen Hemminger --- drivers/net/tap/rte_eth_tap.c | 51 +++++++++++++++++++---------------- 1 file changed, 28 insertions(+), 23 deletions(-) diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c index 2d1e4e365a..0d217f1486 100644 --- a/drivers/net/tap/rte_eth_tap.c +++ b/drivers/net/tap/rte_eth_tap.c @@ -72,6 +72,10 @@ static int tap_devices_count; +static const char *tuntap_types[ETH_TUNTAP_TYPE_MAX] = { + "UNKNOWN", "TUN", "TAP" +}; + static const char *valid_arguments[] = { ETH_TAP_IFACE_ARG, ETH_TAP_REMOTE_ARG, @@ -1075,6 +1079,11 @@ tap_dev_close(struct rte_eth_dev *dev) struct pmd_process_private *process_private = dev->process_private; struct rx_queue *rxq; + if (rte_eal_process_type() != RTE_PROC_PRIMARY) { + rte_free(dev->process_private); + return 0; + } + tap_link_set_down(dev); if (internals->nlsk_fd != -1) { tap_flow_flush(dev, NULL); @@ -1112,6 +1121,23 @@ tap_dev_close(struct rte_eth_dev *dev) close(internals->ka_fd); internals->ka_fd = -1; } + + /* mac_addrs must not be freed alone because part of dev_private */ + dev->data->mac_addrs = NULL; + + internals = dev->data->dev_private; + TAP_LOG(DEBUG, "Closing %s Ethernet device on numa %u", + tuntap_types[internals->type], rte_socket_id()); + + if (internals->ioctl_sock != -1) { + close(internals->ioctl_sock); + internals->ioctl_sock = -1; + } + rte_free(dev->process_private); + dev->process_private = NULL; + if (tap_devices_count == 1) + rte_mp_action_unregister(TAP_MP_KEY); + tap_devices_count--; /* * Since TUN device has no more opened file descriptors * it will be removed from kernel @@ -1845,10 +1871,6 @@ static const struct eth_dev_ops ops = { .filter_ctrl = tap_dev_filter_ctrl, }; -static const char *tuntap_types[ETH_TUNTAP_TYPE_MAX] = { - "UNKNOWN", "TUN", "TAP" -}; - static int eth_dev_tap_create(struct rte_vdev_device *vdev, const char *tap_name, char *remote_iface, struct rte_ether_addr *mac_addr, @@ -1900,7 +1922,7 @@ eth_dev_tap_create(struct rte_vdev_device *vdev, const char *tap_name, /* Setup some default values */ data = dev->data; data->dev_private = pmd; - data->dev_flags = RTE_ETH_DEV_INTR_LSC; + data->dev_flags = RTE_ETH_DEV_INTR_LSC | RTE_ETH_DEV_CLOSE_REMOVE; data->numa_node = numa_node; data->dev_link = pmd_link; @@ -2492,30 +2514,13 @@ static int rte_pmd_tap_remove(struct rte_vdev_device *dev) { struct rte_eth_dev *eth_dev = NULL; - struct pmd_internals *internals; /* find the ethdev entry */ eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev)); if (!eth_dev) - return -ENODEV; - - /* mac_addrs must not be freed alone because part of dev_private */ - eth_dev->data->mac_addrs = NULL; - - if (rte_eal_process_type() != RTE_PROC_PRIMARY) - return rte_eth_dev_release_port(eth_dev); + return 0; tap_dev_close(eth_dev); - - internals = eth_dev->data->dev_private; - TAP_LOG(DEBUG, "Closing %s Ethernet device on numa %u", - tuntap_types[internals->type], rte_socket_id()); - - close(internals->ioctl_sock); - rte_free(eth_dev->process_private); - if (tap_devices_count == 1) - rte_mp_action_unregister(TAP_MP_KEY); - tap_devices_count--; rte_eth_dev_release_port(eth_dev); return 0; -- 2.20.1