[dpdk-stable] patch 'net/i40e: fix intr callback unregister by adding retry' has been queued to stable release 18.02.2
luca.boccassi at gmail.com
luca.boccassi at gmail.com
Mon Apr 30 16:03:49 CEST 2018
Hi,
FYI, your patch has been queued to stable release 18.02.2
Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/02/18. So please
shout if anyone has objections.
Thanks.
Luca Boccassi
---
>From 0dec1711c350556d5d5fee8ab53b021c936c1d16 Mon Sep 17 00:00:00 2001
From: Yunjian Wang <wangyunjian at huawei.com>
Date: Tue, 20 Mar 2018 15:01:24 +0800
Subject: [PATCH] net/i40e: fix intr callback unregister by adding retry
[ upstream commit 0264539dce2d40d8abaed474d4b1b526ca3ed2e4 ]
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: d42aaf30008b ("i40e: support port hotplug")
Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
Reviewed-by: Kirill Rybalchenko <kirill.rybalchenko at intel.com>
Acked-by: Qi Zhang <qi.z.zhang at intel.com>
---
drivers/net/i40e/i40e_ethdev.c | 18 +++++++++++++++---
1 file changed, 15 insertions(+), 3 deletions(-)
diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 968249ed1..5671b64bf 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -1533,6 +1533,7 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
struct rte_flow *p_flow;
int ret;
uint8_t aq_fail = 0;
+ int retries = 0;
PMD_INIT_FUNC_TRACE();
@@ -1574,9 +1575,20 @@ eth_i40e_dev_uninit(struct rte_eth_dev *dev)
/* disable uio intr before callback unregister */
rte_intr_disable(intr_handle);
- /* register callback func to eal lib */
- rte_intr_callback_unregister(intr_handle,
- i40e_dev_interrupt_handler, dev);
+ /* unregister callback func to eal lib */
+ do {
+ ret = rte_intr_callback_unregister(intr_handle,
+ i40e_dev_interrupt_handler, dev);
+ if (ret >= 0) {
+ break;
+ } else if (ret != -EAGAIN) {
+ PMD_INIT_LOG(ERR,
+ "intr callback unregister failed: %d",
+ ret);
+ return ret;
+ }
+ i40e_msec_delay(500);
+ } while (retries++ < 5);
i40e_rm_ethtype_filter_list(pf);
i40e_rm_tunnel_filter_list(pf);
--
2.14.2
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