From 91fbf1791cd7d69012010ab159d0b5c7dee81f79 Mon Sep 17 00:00:00 2001 From: Yunjian Wang Date: Wed, 21 Mar 2018 20:28:10 +0800 Subject: [PATCH] net/ixgbe: fix intr callback unregister by adding retry The nic's interrupt source has some active callbacks, when the port hotplug. Add a retry to give more port's a chance to uninit before returning an error. Fixes: 2866c5f1b87e ("ixgbe: support port hotplug") Cc: stable@dpdk.org Signed-off-by: Yunjian Wang Acked-by: Qi Zhang --- drivers/net/ixgbe/ixgbe_ethdev.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c index 1cb85b367b..4df5c75c30 100644 --- a/drivers/net/ixgbe/ixgbe_ethdev.c +++ b/drivers/net/ixgbe/ixgbe_ethdev.c @@ -1286,6 +1286,8 @@ eth_ixgbe_dev_uninit(struct rte_eth_dev *eth_dev) struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(eth_dev); struct rte_intr_handle *intr_handle = &pci_dev->intr_handle; struct ixgbe_hw *hw; + int retries = 0; + int ret; PMD_INIT_FUNC_TRACE(); @@ -1306,8 +1308,20 @@ eth_ixgbe_dev_uninit(struct rte_eth_dev *eth_dev) /* disable uio intr before callback unregister */ rte_intr_disable(intr_handle); - rte_intr_callback_unregister(intr_handle, - ixgbe_dev_interrupt_handler, eth_dev); + + do { + ret = rte_intr_callback_unregister(intr_handle, + ixgbe_dev_interrupt_handler, eth_dev); + if (ret >= 0) { + break; + } else if (ret != -EAGAIN) { + PMD_INIT_LOG(ERR, + "intr callback unregister failed: %d", + ret); + return ret; + } + rte_delay_ms(100); + } while (retries++ < (10 + IXGBE_LINK_UP_TIME)); /* uninitialize PF if max_vfs not zero */ ixgbe_pf_host_uninit(eth_dev); -- 2.20.1