From: wangyunjian <wangyunjian@huawei.com>
To: "Zhang, Qi Z" <qi.z.zhang@intel.com>,
"Rybalchenko, Kirill" <kirill.rybalchenko@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: caihe <caihe@huawei.com>
Subject: Re: [dpdk-dev] [PATCH v3] net/i40e: fix intr callback unregister by adding retry
Date: Tue, 20 Mar 2018 02:57:03 +0000 [thread overview]
Message-ID: <34EFBCA9F01B0748BEB6B629CE643AE60C751059@dggemm513-mbs.china.huawei.com> (raw)
In-Reply-To: <039ED4275CED7440929022BC67E706115316DCBE@SHSMSX103.ccr.corp.intel.com>
Is it better to fix this way? Or other ideas?
- /* register callback func to eal lib */
- rte_intr_callback_unregister(intr_handle,
- i40e_dev_interrupt_handler, dev);
-
+ /* unregister callback func to eal lib */
+ while ((ret = rte_intr_callback_unregister(intr_handle,
+ i40e_dev_interrupt_handler, dev)) == -EAGAIN)
+ ;
+ if (ret < 0)
+ PMD_INIT_LOG(ERR,
+ "cannot unregister interrupt handler %d",
+ ret);
> -----Original Message-----
> From: Zhang, Qi Z [mailto:qi.z.zhang@intel.com]
> Sent: Wednesday, March 14, 2018 9:42 PM
> To: Rybalchenko, Kirill <kirill.rybalchenko@intel.com>; wangyunjian
> <wangyunjian@huawei.com>; dev@dpdk.org
> Cc: caihe <caihe@huawei.com>
> Subject: RE: [dpdk-dev] [PATCH v3] net/i40e: fix intr callback unregister by
> adding retry
>
>
>
> > -----Original Message-----
> > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Rybalchenko,
> > Kirill
> > Sent: Wednesday, March 14, 2018 8:08 PM
> > To: wangyunjian <wangyunjian@huawei.com>; dev@dpdk.org
> > Cc: caihe@huawei.com
> > Subject: Re: [dpdk-dev] [PATCH v3] net/i40e: fix intr callback
> > unregister by adding retry
> >
> >
> >
> > > -----Original Message-----
> > > From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of wangyunjian
> > > Sent: Wednesday 14 March 2018 12:02
> > > To: dev@dpdk.org
> > > Cc: caihe@huawei.com; Yunjian Wang <wangyunjian@huawei.com>
> > > Subject: [dpdk-dev] [PATCH v3] net/i40e: fix intr callback
> > > unregister by adding retry
> > >
> > > From: Yunjian Wang <wangyunjian@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: d42aaf30008b ("i40e: support port hotplug")
> > >
> > > Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
> > > ---
> > > v2:
> > > * Fix return value check
> > > ---
> > > v3:
> > > * Fix comment suggested by Kirill Rybalchenko
> > > ---
> > > 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 508b417..6bb31f6 100644
> > > --- a/drivers/net/i40e/i40e_ethdev.c
> > > +++ b/drivers/net/i40e/i40e_ethdev.c
> > > @@ -1533,6 +1533,7 @@ void i40e_flex_payload_reg_set_default(struct
> > > i40e_hw *hw)
> > > struct rte_flow *p_flow;
> > > int ret;
> > > uint8_t aq_fail = 0;
> > > + int retries = 0;
> > >
> > > PMD_INIT_FUNC_TRACE();
> > >
> > > @@ -1574,9 +1575,20 @@ void i40e_flex_payload_reg_set_default(struct
> > > i40e_hw *hw)
> > > /* 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(100);
> > > + } while (retries++ < 5);
> > >
> > > i40e_rm_ethtype_filter_list(pf);
> > > i40e_rm_tunnel_filter_list(pf);
> > > --
> > > 1.8.3.1
> > >
> >
> > Reviewed-by: Kirill Rybalchenko <kirill.rybalchenko@intel.com>
> >
> Acked-by: Qi Zhang <qi.z.zhang@intel.com>
next prev parent reply other threads:[~2018-03-20 2:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-14 12:02 wangyunjian
2018-03-14 12:07 ` Rybalchenko, Kirill
2018-03-14 13:41 ` Zhang, Qi Z
2018-03-20 2:57 ` wangyunjian [this message]
2018-03-20 3:27 ` Zhang, Qi Z
2018-03-20 6:59 ` wangyunjian
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