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From: "Trahe, Fiona" <fiona.trahe@intel.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: David Marchand <david.marchand@redhat.com>,
	"nhorman@tuxdriver.com" <nhorman@tuxdriver.com>,
	"bluca@debian.org" <bluca@debian.org>,
	"ktraynor@redhat.com" <ktraynor@redhat.com>,
	Ray Kinsella <mdr@ashroe.eu>, "dev@dpdk.org" <dev@dpdk.org>,
	Akhil Goyal <akhil.goyal@nxp.com>,
	"Yigit, Ferruh" <ferruh.yigit@intel.com>,
	"Ananyev, Konstantin" <konstantin.ananyev@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>, Anoob Joseph <anoobj@marvell.com>,
	"Kusztal, ArkadiuszX" <arkadiuszx.kusztal@intel.com>,
	"Richardson, Bruce" <bruce.richardson@intel.com>,
	"Mcnamara, John" <john.mcnamara@intel.com>,
	"dodji@seketeli.net" <dodji@seketeli.net>,
	"Andrew Rybchenko" <arybchenko@solarflare.com>,
	"aconole@redhat.com" <aconole@redhat.com>,
	"Trahe, Fiona" <fiona.trahe@intel.com>
Subject: Re: [dpdk-dev] [PATCH v2 4/4] add ABI checks
Date: Tue, 4 Feb 2020 17:46:44 +0000	[thread overview]
Message-ID: <BN6PR11MB17961C321FB6446CE9440C88E4030@BN6PR11MB1796.namprd11.prod.outlook.com> (raw)
In-Reply-To: <7712335.T7Z3S40VBb@xps>



> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: Tuesday, February 4, 2020 4:00 PM
> To: Trahe, Fiona <fiona.trahe@intel.com>
> Cc: David Marchand <david.marchand@redhat.com>; nhorman@tuxdriver.com; bluca@debian.org;
> ktraynor@redhat.com; Ray Kinsella <mdr@ashroe.eu>; dev@dpdk.org; Akhil Goyal
> <akhil.goyal@nxp.com>; Yigit, Ferruh <ferruh.yigit@intel.com>; Ananyev, Konstantin
> <konstantin.ananyev@intel.com>; dev@dpdk.org; Anoob Joseph <anoobj@marvell.com>; Kusztal,
> ArkadiuszX <arkadiuszx.kusztal@intel.com>; Richardson, Bruce <bruce.richardson@intel.com>;
> Mcnamara, John <john.mcnamara@intel.com>; dodji@seketeli.net; Andrew Rybchenko
> <arybchenko@solarflare.com>; aconole@redhat.com
> Subject: Re: [dpdk-dev] [PATCH v2 4/4] add ABI checks
> 
> 04/02/2020 16:52, Trahe, Fiona:
> >
> > > We are working on a patch, when it is ready we will send it.
> > > If it's not ready by end of your today, of course, go ahead with (b) and
> > > we will work towards 20.05.
> >
> > We will not be sending a patch today.
> > The patch we're working on will provide two versions of rte_cryptodev_info_get(),
> > both call the same PMD function from the dev_ops info_get fn ptr.
> > The default version operates s as normal, the 19.11 version searches
> > through the list returned by the PMD, looking for sym.aead.algo = ChaChaPoly, it needs to strip it from
> the list.
> > As PMDs just pass a ptr to their capabilities list ( it isn't a linked list, but an array
> > with an end marker  = RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST) if the API
> > layer detects Chacha it must allocate some space and store a local copy of the
> > trimmed list. This must be stored only once per device.
> 
> I don't understand what you have to store.
> Can't you just set the algo to 0 if it is ChaCha?
[Fiona] it returns a pointer to data in the PMD domain, which the API couldn't and shouldn't overwrite, e.g.
static const struct rte_cryptodev_capabilities qat_gen3_sym_capabilities[]

> 
> > This versioning will apply to any PMD which wants to take advantage of the new API between now and
> 20.11.
> >
> > Note, I expect the ABI checker tools will still complain of ABI breakage as the LIST_END value will still
> change.
> 
> Right, you need to update the ignore list for the tool.
> 
> > We are also reviewing all other cryptodev APIs in case there is any other API which needs versioning.
> >
> > Anyone see any problem with this approach?
> 
> The other issue is with all other functions accepting this enum as input.
> We should continue returning an error if getting Chacha as input with
> 19.11 version of these functions.
> But I would tend to consider this small ABI breakage can be ignored
> as it is in the error path.
[Fiona] The QAT PMD tests for and handles this error. I expect other PMDs do too. 


  reply	other threads:[~2020-02-04 17:47 UTC|newest]

Thread overview: 104+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-20 15:20 [dpdk-dev] [PATCH] " David Marchand
2019-12-20 15:32 ` Richardson, Bruce
2019-12-20 16:20   ` Kinsella, Ray
2019-12-20 21:00     ` Thomas Monjalon
2020-01-06 13:17       ` Aaron Conole
2020-01-15 13:07         ` Burakov, Anatoly
2020-01-14 23:19     ` Thomas Monjalon
2020-01-15 11:33       ` Neil Horman
2020-01-15 12:38         ` Thomas Monjalon
2020-01-16 11:52           ` Neil Horman
2020-01-16 14:20             ` Thomas Monjalon
2020-01-16 18:49               ` Neil Horman
2020-01-16 20:01                 ` Thomas Monjalon
2020-01-17 19:01                   ` Neil Horman
2020-01-17 21:26                     ` David Marchand
2019-12-20 20:25 ` Neil Horman
2020-01-29 17:26 ` [dpdk-dev] [PATCH v2 0/4] " David Marchand
2020-01-29 17:26   ` [dpdk-dev] [PATCH v2 1/4] hash: fix meson headers packaging David Marchand
2020-01-30 10:12     ` Luca Boccassi
2020-01-30 10:54       ` David Marchand
2020-01-30 10:56         ` Luca Boccassi
2020-01-29 17:26   ` [dpdk-dev] [PATCH v2 2/4] build: split build helper David Marchand
2020-01-29 17:26   ` [dpdk-dev] [PATCH v2 3/4] build: test meson installation David Marchand
2020-01-29 17:26   ` [dpdk-dev] [PATCH v2 4/4] add ABI checks David Marchand
2020-01-29 17:42     ` Thomas Monjalon
2020-01-29 18:10       ` Anoob Joseph
2020-01-29 20:03         ` David Marchand
2020-01-29 20:13           ` Akhil Goyal
2020-01-30 16:09             ` Ferruh Yigit
2020-01-30 20:18               ` Thomas Monjalon
2020-01-31  9:03                 ` Ferruh Yigit
2020-01-31 10:26                   ` Ananyev, Konstantin
2020-01-31 14:16                 ` Trahe, Fiona
2020-02-02 13:05                   ` Thomas Monjalon
2020-02-02 14:41                     ` Ananyev, Konstantin
2020-02-03  9:30                       ` Ferruh Yigit
2020-02-03 11:50                         ` Neil Horman
2020-02-03 13:09                           ` Ferruh Yigit
2020-02-03 14:00                             ` Dodji Seketeli
2020-02-03 14:46                               ` Ferruh Yigit
2020-02-03 15:08                             ` Trahe, Fiona
2020-02-03 17:09                         ` Thomas Monjalon
2020-02-03 17:34                           ` Thomas Monjalon
2020-02-03 18:55                             ` Ray Kinsella
2020-02-03 21:07                               ` Thomas Monjalon
2020-02-04  9:46                                 ` Ferruh Yigit
2020-02-04 10:24                                 ` Thomas Monjalon
2020-02-04 12:44                                   ` Trahe, Fiona
2020-02-04 15:52                                     ` Trahe, Fiona
2020-02-04 15:59                                       ` Thomas Monjalon
2020-02-04 17:46                                         ` Trahe, Fiona [this message]
2020-02-13 14:51                                           ` Kusztal, ArkadiuszX
2020-03-16 12:57                                             ` Trahe, Fiona
2020-03-16 13:09                                               ` Thomas Monjalon
2020-03-17 13:27                                                 ` Kusztal, ArkadiuszX
2020-03-17 15:10                                                   ` Thomas Monjalon
2020-03-17 19:10                                                     ` Kusztal, ArkadiuszX
2020-02-04 12:57                                   ` Kevin Traynor
2020-02-04 14:44                                   ` Aaron Conole
2020-02-04 19:49                                     ` Neil Horman
2020-02-04  9:51                               ` David Marchand
2020-02-04 10:10                                 ` Trahe, Fiona
2020-02-04 10:38                                   ` Thomas Monjalon
2020-02-05 11:10                                 ` Ray Kinsella
2020-02-03 17:40                           ` Ferruh Yigit
2020-02-03 18:40                             ` Thomas Monjalon
2020-02-04  9:19                               ` Ferruh Yigit
2020-02-04  9:45                                 ` Thomas Monjalon
2020-02-04  9:56                                   ` Ferruh Yigit
2020-02-04 10:08                                     ` Bruce Richardson
2020-02-04 10:17                                     ` Kevin Traynor
2020-02-04 10:16                             ` Akhil Goyal
2020-02-04 10:28                               ` Thomas Monjalon
2020-02-04 10:32                                 ` Akhil Goyal
2020-02-04 11:35                                   ` Bruce Richardson
2020-02-04 22:10                                   ` Neil Horman
2020-02-05  6:16                                     ` [dpdk-dev] [EXT] " Anoob Joseph
2020-02-05 14:33                                       ` Trahe, Fiona
2020-02-04 21:59                               ` [dpdk-dev] " Neil Horman
2020-01-30 13:06         ` Trahe, Fiona
2020-01-30 15:59           ` Thomas Monjalon
2020-01-30 16:42             ` Ferruh Yigit
2020-01-30 23:49             ` Ananyev, Konstantin
2020-01-31  9:07               ` Ferruh Yigit
2020-01-31  9:37                 ` Ananyev, Konstantin
2020-01-30 10:57   ` [dpdk-dev] [PATCH v2 0/4] " Luca Boccassi
2020-01-30 16:00 ` [dpdk-dev] [PATCH v3 " David Marchand
2020-01-30 16:00   ` [dpdk-dev] [PATCH v3 1/4] hash: fix meson headers packaging David Marchand
2020-01-30 18:01     ` Wang, Yipeng1
2020-01-30 18:40       ` Honnappa Nagarahalli
2020-02-05 19:51         ` Wang, Yipeng1
2020-01-30 16:00   ` [dpdk-dev] [PATCH v3 2/4] build: split build helper David Marchand
2020-01-30 16:00   ` [dpdk-dev] [PATCH v3 3/4] build: test meson installation David Marchand
2020-01-30 22:17     ` Thomas Monjalon
2020-01-30 16:00   ` [dpdk-dev] [PATCH v3 4/4] add ABI checks David Marchand
2020-01-30 22:32     ` Thomas Monjalon
2020-02-01 15:29       ` David Marchand
2020-01-30 22:44     ` Thomas Monjalon
2020-02-02 21:08 ` [dpdk-dev] [PATCH v4 0/3] " David Marchand
2020-02-02 21:08   ` [dpdk-dev] [PATCH v4 1/3] hash: fix meson headers packaging David Marchand
2020-02-05 19:53     ` Wang, Yipeng1
2020-02-02 21:08   ` [dpdk-dev] [PATCH v4 2/3] build: split build helper David Marchand
2020-02-02 21:08   ` [dpdk-dev] [PATCH v4 3/3] add ABI checks David Marchand
2020-02-05 14:13   ` [dpdk-dev] [PATCH v4 0/3] " Thomas Monjalon

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