From 710aa4279097e9ee5a131b7e0732e5a8ef8bcfc1 Mon Sep 17 00:00:00 2001 From: Yunjian Wang Date: Thu, 16 Apr 2020 11:04:25 +0800 Subject: [PATCH] net/tap: fix mbuf and mem leak during queue release For the tap PMD, we should release mbufs and iovecs from the Rx queue when closing device. In order to remove duplicated code, rte_pmd_tap_remove() calls tap_dev_close(). Fixes: 0781f5762cfe ("net/tap: support segmented mbufs") Cc: stable@dpdk.org Signed-off-by: Yunjian Wang Reviewed-by: Ferruh Yigit Acked-by: Stephen Hemminger --- drivers/net/tap/rte_eth_tap.c | 36 ++++++++++++++--------------------- 1 file changed, 14 insertions(+), 22 deletions(-) diff --git a/drivers/net/tap/rte_eth_tap.c b/drivers/net/tap/rte_eth_tap.c index 6d54c254d7..9c88b9268e 100644 --- a/drivers/net/tap/rte_eth_tap.c +++ b/drivers/net/tap/rte_eth_tap.c @@ -1020,15 +1020,25 @@ tap_dev_close(struct rte_eth_dev *dev) int i; struct pmd_internals *internals = dev->data->dev_private; struct pmd_process_private *process_private = dev->process_private; + struct rx_queue *rxq; tap_link_set_down(dev); - tap_flow_flush(dev, NULL); - tap_flow_implicit_flush(internals, NULL); + if (internals->nlsk_fd != -1) { + tap_flow_flush(dev, NULL); + tap_flow_implicit_flush(internals, NULL); + tap_nl_final(internals->nlsk_fd); + internals->nlsk_fd = -1; + } for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) { if (process_private->rxq_fds[i] != -1) { + rxq = &internals->rxq[i]; close(process_private->rxq_fds[i]); process_private->rxq_fds[i] = -1; + rte_pktmbuf_free(rxq->pool); + rte_free(rxq->iovecs); + rxq->pool = NULL; + rxq->iovecs = NULL; } if (process_private->txq_fds[i] != -1) { close(process_private->txq_fds[i]); @@ -2398,8 +2408,6 @@ rte_pmd_tap_remove(struct rte_vdev_device *dev) { struct rte_eth_dev *eth_dev = NULL; struct pmd_internals *internals; - struct pmd_process_private *process_private; - int i; /* find the ethdev entry */ eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev)); @@ -2412,28 +2420,12 @@ rte_pmd_tap_remove(struct rte_vdev_device *dev) if (rte_eal_process_type() != RTE_PROC_PRIMARY) return rte_eth_dev_release_port(eth_dev); - internals = eth_dev->data->dev_private; - process_private = eth_dev->process_private; + 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()); - if (internals->nlsk_fd) { - tap_flow_flush(eth_dev, NULL); - tap_flow_implicit_flush(internals, NULL); - tap_nl_final(internals->nlsk_fd); - } - for (i = 0; i < RTE_PMD_TAP_MAX_QUEUES; i++) { - if (process_private->rxq_fds[i] != -1) { - close(process_private->rxq_fds[i]); - process_private->rxq_fds[i] = -1; - } - if (process_private->txq_fds[i] != -1) { - close(process_private->txq_fds[i]); - process_private->txq_fds[i] = -1; - } - } - close(internals->ioctl_sock); rte_free(eth_dev->process_private); if (tap_devices_count == 1) -- 2.20.1