[dpdk-dev] [PATCH] net/ixgbe: fix intr callback unregister by adding retry
wangyunjian
wangyunjian at huawei.com
Wed Mar 21 13:28:10 CET 2018
From: Yunjian Wang <wangyunjian at huawei.com>
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")
Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
---
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 4483258..6c01683 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -1339,6 +1339,8 @@ struct rte_ixgbe_xstats_name_off {
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();
@@ -1359,8 +1361,20 @@ struct rte_ixgbe_xstats_name_off {
/* 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);
--
1.8.3.1
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