From: "Gaëtan Rivet" <gaetan.rivet@6wind.com>
To: Ferruh Yigit <ferruh.yigit@intel.com>
Cc: Thomas Monjalon <thomas.monjalon@6wind.com>,
dev@dpdk.org, Adrien Mazarguil <adrien.mazarguil@6wind.com>,
Neil Horman <nhorman@tuxdriver.com>,
Bruce Richardson <bruce.richardson@intel.com>,
Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [dpdk-dev] [PATCH v2 00/13] introduce fail-safe PMD
Date: Wed, 17 May 2017 18:59:37 +0200 [thread overview]
Message-ID: <20170517165937.GR14914@bidouze.vm.6wind.com> (raw)
In-Reply-To: <09a808a2-2398-fc10-057c-b3595572e910@intel.com>
On Wed, May 17, 2017 at 01:50:40PM +0100, Ferruh Yigit wrote:
>On 3/20/2017 3:00 PM, Thomas Monjalon wrote:
>> There have been some discussions on this new PMD and it will be
>> discussed today in the techboard meeting.
>>
>> I would like to expose my view and summarize the solutions I have heard.
>> First it is important to remind that everyone agrees on the need for
>> this feature, i.e. masking the hotplug events by maintaining an ethdev
>> object even without real underlying device.
>>
>> 1/
>> The proposal from Gaetan is to add a failsafe driver with 2 features:
>> * masking underlying device
>> * limited and small failover code to switch from a device
>> to another one, with the same centralized configuration
>> The latter feature makes think to the bonding driver, but it could be
>> kept limited without any intent of implementing real bonding features.
>>
>> 2/
>> If we really want to merge failsafe and bonding features, we could
>> create a new bonding driver with centralized configuration.
>> The legacy bonding driver let each slave to be configured separately.
>> It is a different model and we should not mix them.
>> If one is better, it could be deprecated later.
>>
>> 3/
>> It can be tried to implement the failsafe feature into the bonding
>> driver, as Neil suggests.
>> However, I am not sure it would work very well or would be easy to use.
>>
>> 4/
>> We can implement only the failsafe feature as a PMD and use it to wrap
>> the slaves of the bonding driver.
>> So the order of link would be
>> bonding -> failsafe -> real device
>> In this model, failsafe can have only one slave and do not implement
>> the fail-over feature.
>>
>
>Tech board decided [1] to "reconsider" the PMD for this release (17.08).
>So, lets start it J
>
>I think it is good idea to continue on top of above summary, is there a
>plan to how to proceed?
>
The fail-safe proposal has not evolved from the techboard point of view.
The salient point is still choosing between those 4 possible integrations.
To give a quick overview of its current state:
I have started working on a v3 to be integrated to v17.08. The work
however was exceedingly complicated due to deep-rooted dependencies in
the PCI implementation within the EAL, which has evolved in v17.05 and
will evolve during this release.
The current rte_bus rework from Jan Blunck and myself will greatly
simplify the sub-EAL layer that was used in the fail-safe. I am thus
waiting on Jan Blunck series on attach / detach, to propose mine in
turn for rte_devargs, move the PCI bus where it belongs and, finally,
rebase the fail-safe upon it.
The form this work is taking however is still the same as previously,
thus currently aiming at solutions 1 or 2.
>Thanks,
>ferruh
>
>[1]
>http://dpdk.org/ml/archives/dev/2017-March/061009.html
--
Gaëtan Rivet
6WIND
next prev parent reply other threads:[~2017-05-17 16:59 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-03 15:40 [dpdk-dev] [PATCH 00/12] " Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 01/12] ethdev: save VLAN filter setting Gaetan Rivet
2017-03-03 17:33 ` Stephen Hemminger
2017-03-03 15:40 ` [dpdk-dev] [PATCH 02/12] ethdev: add flow API rule copy function Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 03/12] ethdev: add deferred intermediate device state Gaetan Rivet
2017-03-03 17:34 ` Stephen Hemminger
2017-03-03 15:40 ` [dpdk-dev] [PATCH 04/12] pci: expose device detach routine Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 05/12] pci: expose parse and probe routines Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 06/12] net/failsafe: add fail-safe PMD Gaetan Rivet
2017-03-03 17:38 ` Stephen Hemminger
2017-03-06 14:19 ` Gaëtan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 07/12] net/failsafe: add plug-in support Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 08/12] net/failsafe: add flexible device definition Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 09/12] net/failsafe: support flow API Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 10/12] net/failsafe: support offload capabilities Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 11/12] net/failsafe: add fast burst functions Gaetan Rivet
2017-03-03 15:40 ` [dpdk-dev] [PATCH 12/12] net/failsafe: support device removal Gaetan Rivet
2017-03-03 16:14 ` [dpdk-dev] [PATCH 00/12] introduce fail-safe PMD Bruce Richardson
2017-03-06 13:53 ` Gaëtan Rivet
2017-03-03 17:27 ` Stephen Hemminger
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 00/13] " Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 01/13] ethdev: save VLAN filter setting Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 02/13] ethdev: add flow API rule copy function Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 03/13] ethdev: add deferred intermediate device state Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 04/13] pci: expose device detach routine Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 05/13] pci: expose parse and probe routines Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 06/13] net/failsafe: add fail-safe PMD Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 07/13] net/failsafe: add plug-in support Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 08/13] net/failsafe: add flexible device definition Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 09/13] net/failsafe: support flow API Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 10/13] net/failsafe: support offload capabilities Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 11/13] net/failsafe: add fast burst functions Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 12/13] net/failsafe: support device removal Gaetan Rivet
2017-03-08 15:15 ` [dpdk-dev] [PATCH v2 13/13] net/failsafe: support link status change event Gaetan Rivet
2017-03-08 16:54 ` [dpdk-dev] [PATCH v2 00/13] introduce fail-safe PMD Neil Horman
2017-03-09 9:15 ` Bruce Richardson
2017-03-10 9:13 ` Gaëtan Rivet
2017-03-10 22:43 ` Neil Horman
2017-03-14 14:49 ` Gaëtan Rivet
2017-03-15 3:28 ` Bruce Richardson
2017-03-15 11:15 ` Thomas Monjalon
2017-03-15 14:25 ` Gaëtan Rivet
2017-03-16 20:50 ` Neil Horman
2017-03-17 10:56 ` Gaëtan Rivet
2017-03-18 19:51 ` Neil Horman
2017-03-20 15:00 ` Thomas Monjalon
2017-05-17 12:50 ` Ferruh Yigit
2017-05-17 16:59 ` Gaëtan Rivet [this message]
2017-03-23 13:01 ` Ferruh Yigit
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