From: "Lu, Wenzhuo" <wenzhuo.lu@intel.com>
To: Jerin Jacob <jerin.jacob@caviumnetworks.com>
Cc: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
Stephen Hemminger <stephen@networkplumber.org>,
"dev@dpdk.org" <dev@dpdk.org>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"Chen, Jing D" <jing.d.chen@intel.com>,
"Liang, Cunming" <cunming.liang@intel.com>,
"Wu, Jingjing" <jingjing.wu@intel.com>,
"Zhang, Helin" <helin.zhang@intel.com>,
"thomas.monjalon@6wind.com" <thomas.monjalon@6wind.com>
Subject: Re: [dpdk-dev] [PATCH v6 1/4] lib/librte_ether: support device reset
Date: Wed, 22 Jun 2016 06:42:43 +0000 [thread overview]
Message-ID: <6A0DE07E22DDAD4C9103DF62FEBC09090348987B@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <20160622061000.GA8698@localhost.localdomain>
Hi Jerin,
> -----Original Message-----
> From: Jerin Jacob [mailto:jerin.jacob@caviumnetworks.com]
> Sent: Wednesday, June 22, 2016 2:10 PM
> To: Lu, Wenzhuo
> Cc: Ananyev, Konstantin; Stephen Hemminger; dev@dpdk.org; Richardson,
> Bruce; Chen, Jing D; Liang, Cunming; Wu, Jingjing; Zhang, Helin;
> thomas.monjalon@6wind.com
> Subject: Re: [dpdk-dev] [PATCH v6 1/4] lib/librte_ether: support device reset
>
> On Wed, Jun 22, 2016 at 05:05:14AM +0000, Lu, Wenzhuo wrote:
> >
> >
> > > -----Original Message-----
> > > From: Jerin Jacob [mailto:jerin.jacob@caviumnetworks.com]
> > > Sent: Wednesday, June 22, 2016 12:15 PM
> > > To: Lu, Wenzhuo
> > > Cc: Ananyev, Konstantin; Stephen Hemminger; dev@dpdk.org;
> > > Richardson, Bruce; Chen, Jing D; Liang, Cunming; Wu, Jingjing;
> > > Zhang, Helin; thomas.monjalon@6wind.com
> > > Subject: Re: [dpdk-dev] [PATCH v6 1/4] lib/librte_ether: support
> > > device reset
> > >
> > > On Wed, Jun 22, 2016 at 03:32:16AM +0000, Lu, Wenzhuo wrote:
> > > > Lost here. I think these RTE_ETH_EVENTs are used to connect the
> > > > APP call
> > > back functions with the events.
> > > > Actually I want the APP to register a callback function
> > > > reset_event_callback for
> > > the reset event. Like this,
> > > > /* register reset interrupt callback */
> > > > rte_eth_dev_callback_register(portid,
> > > > RTE_ETH_EVENT_INTR_RESET, reset_event_callback,
> > > NULL); And when the
> > > > VF driver finds PF link down/up, it should use
> > > _rte_eth_dev_callback_process(dev, RTE_ETH_EVENT_INTR_RESET) to run
> > > into the callback which is provided by APP. Means reset_event_callback here.
> > >
> > > me too. Their is existing RTE_ETH_EVENT_INTR_RESET event to notify
> > > the PF reset.I guess it is not for the PF link change or it isfor
> > > generic VF reset request initiated by PF for everything.
> > I think this event is for device reset not only for PF but also can for VF. I think
> we can use this event when the driver want the APP to reset the device. The PF
> link down/up caused VF reset is one of the cases.
>
> Then please correct description for the RTE_ETH_EVENT_INTR_RESET in
> lib/librte_ether/rte_ethdev.h "/**< reset interrupt event, sent to VF on PF reset
> */"
>
> >
> > >
> > > file: lib/librte_ether/rte_ethdev.h
> > > RTE_ETH_EVENT_INTR_RESET,
> > > /**< reset interrupt event, sent to VF on PF reset */
> > >
> > > ^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > >
> > > if application need to call rte_ethdev_reset() on
> > > RTE_ETH_EVENT_INTR_RESET event then please mention it commit log or
> API description.
> > Good suggestion. I'll try to find where's the good place to add more
> explanation.
>
> I guess then reset API can be changed to rte_ethdev_process_reset_intr() or
> similar to reflect the use case(API called by application on reset event from PF)
>
> The PMDs were PF does not generate the RTE_ETH_EVENT_INTR_RESET to VF
> then VF's reset PMD callback shall be a 'nop'
>
> Jerin
But I don't think it's appropriate to bind the RTE_ETH_EVENTs with the APIs. This patch set provide a reset API to reset the device. Don't mean this reset API only can be used when the APP hit the event RTE_ETH_EVENT_INTR_RESET. I can add some comments to suggest the user to call the reset API at that time. But I think APP can call the reset API anytime when it thinks it's necessary. So I don't like the name *process_reset_intr*, it hints that this API is only for the INTR_RESET event.
>
> > >
> >
next prev parent reply other threads:[~2016-06-22 6:42 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-06 5:40 [dpdk-dev] [PATCH 0/8] support reset of VF link Wenzhuo Lu
2016-06-06 5:40 ` [dpdk-dev] [PATCH 1/8] lib/librte_ether: support device reset Wenzhuo Lu
2016-06-06 5:40 ` [dpdk-dev] [PATCH 2/8] lib/librte_ether: defind RX/TX lock mode Wenzhuo Lu
2016-06-08 2:15 ` Stephen Hemminger
2016-06-08 7:34 ` Lu, Wenzhuo
2016-06-09 7:50 ` Olivier Matz
2016-06-12 5:25 ` Lu, Wenzhuo
2016-06-10 18:12 ` Stephen Hemminger
2016-06-12 5:27 ` Lu, Wenzhuo
2016-06-06 5:40 ` [dpdk-dev] [PATCH 3/8] ixgbe: RX/TX with lock on VF Wenzhuo Lu
2016-06-06 5:40 ` [dpdk-dev] [PATCH 4/8] ixgbe: implement device reset " Wenzhuo Lu
2016-06-06 5:40 ` [dpdk-dev] [PATCH 5/8] igb: RX/TX with lock " Wenzhuo Lu
2016-06-06 5:40 ` [dpdk-dev] [PATCH 6/8] igb: implement device reset " Wenzhuo Lu
2016-06-06 5:40 ` [dpdk-dev] [PATCH 7/8] i40e:RX/TX with lock " Wenzhuo Lu
2016-06-06 5:40 ` [dpdk-dev] [PATCH 8/8] i40e: implement device reset " Wenzhuo Lu
2016-06-15 3:03 ` [dpdk-dev] [PATCH v5 0/4] support reset of VF link Wenzhuo Lu
2016-06-15 3:03 ` [dpdk-dev] [PATCH v5 1/4] lib/librte_ether: support device reset Wenzhuo Lu
2016-06-16 15:31 ` Bruce Richardson
2016-06-16 15:36 ` Thomas Monjalon
2016-06-15 3:03 ` [dpdk-dev] [PATCH v5 2/4] ixgbe: implement device reset on VF Wenzhuo Lu
2016-06-15 3:03 ` [dpdk-dev] [PATCH v5 3/4] igb: " Wenzhuo Lu
2016-06-15 3:03 ` [dpdk-dev] [PATCH v5 4/4] i40e: " Wenzhuo Lu
2016-06-20 6:24 ` [dpdk-dev] [PATCH v6 0/4] support reset of VF link Wenzhuo Lu
2016-06-20 6:24 ` [dpdk-dev] [PATCH v6 1/4] lib/librte_ether: support device reset Wenzhuo Lu
2016-06-20 9:14 ` Jerin Jacob
2016-06-20 16:17 ` Stephen Hemminger
2016-06-21 3:51 ` Jerin Jacob
2016-06-21 6:14 ` Lu, Wenzhuo
2016-06-21 7:37 ` Jerin Jacob
2016-06-21 8:24 ` Lu, Wenzhuo
2016-06-21 8:55 ` Jerin Jacob
2016-06-21 9:26 ` Ananyev, Konstantin
2016-06-21 10:57 ` Jerin Jacob
2016-06-21 13:10 ` Ananyev, Konstantin
2016-06-21 13:30 ` Jerin Jacob
2016-06-21 14:03 ` Ananyev, Konstantin
2016-06-21 14:29 ` Jerin Jacob
2016-06-22 1:35 ` Lu, Wenzhuo
2016-06-22 2:37 ` Jerin Jacob
2016-06-22 3:32 ` Lu, Wenzhuo
2016-06-22 4:14 ` Jerin Jacob
2016-06-22 5:05 ` Lu, Wenzhuo
2016-06-22 6:10 ` Jerin Jacob
2016-06-22 6:42 ` Lu, Wenzhuo [this message]
2016-06-22 7:59 ` Jerin Jacob
2016-06-22 8:17 ` Thomas Monjalon
2016-06-22 8:25 ` Lu, Wenzhuo
2016-06-22 9:18 ` Thomas Monjalon
2016-06-22 11:06 ` Jerin Jacob
2016-06-23 0:45 ` Lu, Wenzhuo
2016-06-23 0:39 ` Lu, Wenzhuo
2016-06-21 0:51 ` Lu, Wenzhuo
2016-06-20 6:24 ` [dpdk-dev] [PATCH v6 2/4] ixgbe: implement device reset on VF Wenzhuo Lu
2016-06-20 6:24 ` [dpdk-dev] [PATCH v6 3/4] igb: " Wenzhuo Lu
2016-06-20 6:24 ` [dpdk-dev] [PATCH v6 4/4] i40e: " Wenzhuo Lu
2016-07-04 15:48 ` [dpdk-dev] [PATCH v6 0/4] support reset of VF link Luca Boccassi
2016-07-05 0:52 ` Lu, Wenzhuo
2016-07-05 9:52 ` Luca Boccassi
2016-07-06 0:45 ` Lu, Wenzhuo
2016-07-06 16:26 ` Luca Boccassi
[not found] ` <1467822182.32466.34.camel@brocade.com>
2016-07-07 1:09 ` Lu, Wenzhuo
2016-07-07 10:20 ` Luca Boccassi
2016-07-07 13:12 ` Lu, Wenzhuo
2016-07-07 16:19 ` Luca Boccassi
2016-07-08 0:14 ` Lu, Wenzhuo
2016-07-08 17:15 ` Luca Boccassi
2016-07-11 1:32 ` Lu, Wenzhuo
2016-07-11 12:02 ` Luca Boccassi
2016-07-11 15:43 ` Luca Boccassi
2016-07-12 1:19 ` Lu, Wenzhuo
2016-08-26 12:58 ` Luca Boccassi
2016-08-29 1:04 ` Lu, Wenzhuo
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