From: "De Lara Guarch, Pablo" <pablo.de.lara.guarch@intel.com>
To: Tomasz Duszynski <tdu@semihalf.com>
Cc: "Doherty, Declan" <declan.doherty@intel.com>,
"akhil.goyal@nxp.com" <akhil.goyal@nxp.com>,
"ravi1.kumar@amd.com" <ravi1.kumar@amd.com>,
"jerin.jacob@caviumnetworks.com" <jerin.jacob@caviumnetworks.com>,
"Zhang, Roy Fan" <roy.fan.zhang@intel.com>,
"Trahe, Fiona" <fiona.trahe@intel.com>,
"jianjay.zhou@huawei.com" <jianjay.zhou@huawei.com>,
"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH 3/6] cryptodev: remove max number of sessions
Date: Wed, 13 Jun 2018 08:23:36 +0000 [thread overview]
Message-ID: <E115CCD9D858EF4F90C690B0DCB4D8977F8D354A@IRSMSX108.ger.corp.intel.com> (raw)
In-Reply-To: <20180613061137.GB1913@sh>
Hi Tomasz,
> -----Original Message-----
> From: Tomasz Duszynski [mailto:tdu@semihalf.com]
> Sent: Wednesday, June 13, 2018 7:12 AM
> To: De Lara Guarch, Pablo <pablo.de.lara.guarch@intel.com>
> Cc: Tomasz Duszynski <tdu@semihalf.com>; Doherty, Declan
> <declan.doherty@intel.com>; akhil.goyal@nxp.com; ravi1.kumar@amd.com;
> jerin.jacob@caviumnetworks.com; Zhang, Roy Fan <roy.fan.zhang@intel.com>;
> Trahe, Fiona <fiona.trahe@intel.com>; jianjay.zhou@huawei.com;
> dev@dpdk.org
> Subject: Re: [PATCH 3/6] cryptodev: remove max number of sessions
>
> On Tue, Jun 12, 2018 at 01:53:36PM +0000, De Lara Guarch, Pablo wrote:
> >
> >
> > > -----Original Message-----
> > > From: Tomasz Duszynski [mailto:tdu@semihalf.com]
> > > Sent: Tuesday, June 12, 2018 12:38 PM
> > > To: De Lara Guarch, Pablo <pablo.de.lara.guarch@intel.com>
> > > Cc: Doherty, Declan <declan.doherty@intel.com>; akhil.goyal@nxp.com;
> > > ravi1.kumar@amd.com; jerin.jacob@caviumnetworks.com; Zhang, Roy Fan
> > > <roy.fan.zhang@intel.com>; Trahe, Fiona <fiona.trahe@intel.com>;
> > > tdu@semihalf.com; jianjay.zhou@huawei.com; dev@dpdk.org
> > > Subject: Re: [PATCH 3/6] cryptodev: remove max number of sessions
> > >
> > > Hello Pablo,
> > >
> > > On Fri, Jun 08, 2018 at 11:02:31PM +0100, Pablo de Lara wrote:
> > > > Sessions are not created and stored in the crypto device anymore,
> > > > since now the session mempool is created at the application level.
> > > >
> > > > Therefore the limitation of the maximum number of sessions that
> > > > can be created should not be dependent of the crypto device.
> > > >
> > > > Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
> >
> > ...
> >
> > > > diff --git a/drivers/crypto/mvsam/rte_mrvl_pmd.c
> > > b/drivers/crypto/mvsam/rte_mrvl_pmd.c
> > > > index 1b6029a56..822b6cac7 100644
> > > > --- a/drivers/crypto/mvsam/rte_mrvl_pmd.c
> > > > +++ b/drivers/crypto/mvsam/rte_mrvl_pmd.c
> > > > @@ -719,7 +719,6 @@ cryptodev_mrvl_crypto_create(const char *name,
> > > > internals = dev->data->dev_private;
> > > >
> > > > internals->max_nb_qpairs = init_params->max_nb_queue_pairs;
> > > > - internals->max_nb_sessions = init_params->max_nb_sessions;
> > > >
> > > > /*
> > > > * ret == -EEXIST is correct, it means DMA @@ -734,8 +733,6 @@
> > > > cryptodev_mrvl_crypto_create(const char *name,
> > > > "DMA memory has been already initialized by a
> > > different driver.");
> > > > }
> > > >
> > > > - sam_params.max_num_sessions = internals->max_nb_sessions;
> > >
> > > This will not fly since library maintains separate list of sessions.
> > > We have to initialize this number to something sane. Since we cannot
> > > get it from userspace perhaps make that compile-time configurable by
> > > adding separate CONFIG_?
> >
> > Hi Tomasz,
> >
> > If you need to have an actual limit, you could define it internally
> > (not adding an external configuration option), but bear in mind that
> > This won't prevent an application from trying to allocate more sessions.
>
> You can define arbitrary number of session on condition you have enough
> memory. So no hard limit here. What bothers me is the case where app wants to
> initialize more session than the library internally has.
> If this happens userspace will get an error. On the other hand requesting some
> arbitrary large number of session from library and hoping app will never use so
> many wastes memory (which might be valuable on resource constrained
> systems).
>
> That is why keeping the number of sessions in app and library in sync is
> important.
>
> Do we have any option in DPDK now to workaround this?
Ok I see, so actually the MUSDK library needs a maximum number of sessions.
I'd say then we should keep this field, but we can add a special case: 0.
In this case, the PMD does not have any maximum number of sessions
(which would be applicable to most PMDs).
So, for this PMD, this special case is not supported. If 0 is passed,
either return that unlimited number of sessions is not supported,
or set it to a default value (defined inside the PMD, such as 2048).
If no value is passed, this number can be set to the default value too.
How does this sound?
Thanks,
Pablo
>
> >
> > If your PMD has a limitation on the maximum number of sessions, then
> > maybe this change won't work for you (removing the maximum number of
> sessions), so let me know and we can discuss this.
> >
> > Thanks,
> > Pablo
> >
> > P.S. Please, next time, strip out the code that you are not
> > commenting, as it was hard to find this question :)
> >
>
> --
> - Tomasz Duszyński
next prev parent reply other threads:[~2018-06-13 8:23 UTC|newest]
Thread overview: 135+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-08 22:02 [dpdk-dev] [PATCH 0/6] Cryptodev API changes Pablo de Lara
2018-06-08 22:02 ` [dpdk-dev] [PATCH 1/6] cryptodev: replace bus specific struct with generic dev Pablo de Lara
2018-06-21 12:43 ` Akhil Goyal
2018-06-08 22:02 ` [dpdk-dev] [PATCH 2/6] cryptodev: remove max number of sessions per queue Pablo de Lara
2018-06-21 13:03 ` Akhil Goyal
2018-06-08 22:02 ` [dpdk-dev] [PATCH 3/6] cryptodev: remove max number of sessions Pablo de Lara
2018-06-12 11:37 ` Tomasz Duszynski
2018-06-12 13:53 ` De Lara Guarch, Pablo
2018-06-13 6:11 ` Tomasz Duszynski
2018-06-13 8:23 ` De Lara Guarch, Pablo [this message]
2018-06-13 10:11 ` Tomasz Duszynski
2018-06-19 13:20 ` Trahe, Fiona
2018-06-25 16:42 ` De Lara Guarch, Pablo
2018-06-08 22:02 ` [dpdk-dev] [PATCH 4/6] cryptodev: remove queue start/stop functions Pablo de Lara
2018-06-21 12:50 ` Akhil Goyal
2018-06-08 22:02 ` [dpdk-dev] [PATCH 5/6] cryptodev: remove old get session size functions Pablo de Lara
2018-06-21 12:59 ` Akhil Goyal
2018-06-22 17:02 ` Verma, Shally
2018-06-25 16:40 ` De Lara Guarch, Pablo
2018-06-26 5:28 ` Verma, Shally
2018-06-26 8:17 ` De Lara Guarch, Pablo
2018-06-08 22:02 ` [dpdk-dev] [PATCH 6/6] cryptodev: replace mbuf scatter gather flag Pablo de Lara
2018-06-18 6:29 ` Akhil Goyal
2018-06-25 16:43 ` De Lara Guarch, Pablo
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 00/15] Cryptodev API changes for 18.08 Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 01/15] cryptodev: replace bus specific struct with generic dev Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 02/15] cryptodev: remove max number of sessions per queue Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 03/15] app/crypto-perf: limit number of sessions Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 04/15] test/crypto: " Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 05/15] examples/l2fwd-crypto: " Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 06/15] examples/ipsec-secgw: check for max supported sessions Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 07/15] crypto/mvsam: parse max number of sessions Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 08/15] cryptodev: define value for unlimited sessions Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 09/15] cryptodev: remove max number of sessions parameter Pablo de Lara
2018-06-29 8:02 ` Tomasz Duszynski
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 10/15] doc: remove unneeded deprecation notice Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 11/15] cryptodev: remove queue start/stop functions Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 12/15] cryptodev: remove old get session size functions Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 13/15] cryptodev: replace mbuf scatter gather flag Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 14/15] cryptodev: remove attach/detach session API Pablo de Lara
2018-06-25 8:48 ` [dpdk-dev] [PATCH v2 15/15] cryptodev: rename PMD symmetric " Pablo de Lara
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 00/16] Cryptodev API changes for 18.08 Pablo de Lara
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 01/16] cryptodev: replace bus specific struct with generic dev Pablo de Lara
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 02/16] cryptodev: remove max number of sessions per queue Pablo de Lara
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 03/16] app/crypto-perf: limit number of sessions Pablo de Lara
2018-07-04 12:13 ` Akhil Goyal
2018-07-04 12:15 ` Akhil Goyal
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 04/16] test/crypto: " Pablo de Lara
2018-07-04 12:21 ` Akhil Goyal
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 05/16] examples/l2fwd-crypto: " Pablo de Lara
2018-07-04 12:04 ` Akhil Goyal
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 06/16] examples/ipsec-secgw: check for max supported sessions Pablo de Lara
2018-07-04 12:30 ` Akhil Goyal
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 07/16] crypto/mvsam: parse max number of sessions Pablo de Lara
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 08/16] cryptodev: define value for unlimited sessions Pablo de Lara
2018-07-04 12:40 ` Akhil Goyal
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 09/16] cryptodev: remove max number of sessions parameter Pablo de Lara
2018-06-29 8:04 ` Tomasz Duszynski
2018-07-02 10:58 ` De Lara Guarch, Pablo
2018-07-04 12:42 ` Akhil Goyal
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 10/16] doc: remove unneeded deprecation notice Pablo de Lara
2018-07-04 11:29 ` Akhil Goyal
2018-06-28 0:52 ` [dpdk-dev] [PATCH v3 11/16] cryptodev: remove queue start/stop functions Pablo de Lara
2018-06-28 0:53 ` [dpdk-dev] [PATCH v3 12/16] cryptodev: remove old get session size functions Pablo de Lara
2018-07-04 11:31 ` Akhil Goyal
2018-06-28 0:53 ` [dpdk-dev] [PATCH v3 13/16] cryptodev: replace mbuf scatter gather flag Pablo de Lara
2018-07-04 12:57 ` Akhil Goyal
2018-07-04 15:53 ` De Lara Guarch, Pablo
2018-06-28 0:53 ` [dpdk-dev] [PATCH v3 14/16] cryptodev: remove attach/detach session API Pablo de Lara
2018-07-04 11:33 ` Akhil Goyal
2018-06-28 0:53 ` [dpdk-dev] [PATCH v3 15/16] cryptodev: rename PMD symmetric " Pablo de Lara
2018-07-04 11:36 ` Akhil Goyal
2018-06-28 0:53 ` [dpdk-dev] [PATCH v3 16/16] cryptodev: check if symmetric sessions are supported Pablo de Lara
2018-06-28 13:40 ` Verma, Shally
2018-06-28 14:15 ` De Lara Guarch, Pablo
2018-07-04 12:27 ` Akhil Goyal
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 00/16] Cryptodev API changes Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 01/16] cryptodev: replace bus specific struct with generic dev Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 02/16] cryptodev: remove max number of sessions per queue Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 03/16] app/crypto-perf: limit number of sessions Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 04/16] test/crypto: " Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 05/16] examples/l2fwd-crypto: " Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 06/16] examples/ipsec-secgw: check for max supported sessions Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 07/16] crypto/mvsam: parse max number of sessions Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 08/16] cryptodev: define value for unlimited sessions Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 09/16] cryptodev: remove max number of sessions parameter Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 10/16] doc: remove unneeded deprecation notice Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 11/16] cryptodev: remove queue start/stop functions Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 12/16] cryptodev: remove old get session size functions Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 13/16] cryptodev: replace mbuf scatter gather flag Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 14/16] cryptodev: remove attach/detach session API Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 15/16] cryptodev: rename PMD symmetric " Pablo de Lara
2018-07-04 8:51 ` [dpdk-dev] [PATCH v4 16/16] cryptodev: check if symmetric sessions are supported Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 00/16] Cryptodev API changes Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 01/16] cryptodev: replace bus specific struct with generic dev Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 02/16] cryptodev: remove max number of sessions per queue Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 03/16] app/crypto-perf: limit number of sessions Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 04/16] test/crypto: " Pablo de Lara
2018-07-05 11:27 ` Verma, Shally
2018-07-05 11:30 ` Akhil Goyal
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 05/16] examples/l2fwd-crypto: " Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 06/16] examples/ipsec-secgw: check for max supported sessions Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 07/16] crypto/mvsam: parse max number of sessions Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 08/16] cryptodev: define value for unlimited sessions Pablo de Lara
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 09/16] cryptodev: remove max number of sessions parameter Pablo de Lara
2018-07-09 10:53 ` De Lara Guarch, Pablo
2018-07-05 2:07 ` [dpdk-dev] [PATCH v5 10/16] doc: remove unneeded deprecation notice Pablo de Lara
2018-07-05 2:08 ` [dpdk-dev] [PATCH v5 11/16] cryptodev: remove queue start/stop functions Pablo de Lara
2018-07-05 2:08 ` [dpdk-dev] [PATCH v5 12/16] cryptodev: remove old get session size functions Pablo de Lara
2018-07-05 2:08 ` [dpdk-dev] [PATCH v5 13/16] cryptodev: replace mbuf scatter gather flag Pablo de Lara
2018-07-05 11:35 ` Akhil Goyal
2018-07-05 2:08 ` [dpdk-dev] [PATCH v5 14/16] cryptodev: remove attach/detach session API Pablo de Lara
2018-07-05 2:08 ` [dpdk-dev] [PATCH v5 15/16] cryptodev: rename PMD symmetric " Pablo de Lara
2018-07-05 2:08 ` [dpdk-dev] [PATCH v5 16/16] cryptodev: check if symmetric sessions are supported Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 00/16] Cryptodev API changes Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 01/16] cryptodev: replace bus specific struct with generic dev Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 02/16] cryptodev: remove max number of sessions per queue Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 03/16] app/crypto-perf: limit number of sessions Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 04/16] test/crypto: " Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 05/16] examples/l2fwd-crypto: " Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 06/16] examples/ipsec-secgw: check for max supported sessions Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 07/16] crypto/mvsam: parse max number of sessions Pablo de Lara
2018-07-10 10:42 ` Tomasz Duszynski
2018-07-10 10:45 ` De Lara Guarch, Pablo
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 08/16] cryptodev: define value for unlimited sessions Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 09/16] cryptodev: remove max number of sessions parameter Pablo de Lara
2018-07-10 8:46 ` Akhil Goyal
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 10/16] doc: remove unneeded deprecation notice Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 11/16] cryptodev: remove queue start/stop functions Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 12/16] cryptodev: remove old get session size functions Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 13/16] cryptodev: replace mbuf scatter gather flag Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 14/16] cryptodev: remove attach/detach session API Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 15/16] cryptodev: rename PMD symmetric " Pablo de Lara
2018-07-10 0:36 ` [dpdk-dev] [PATCH v6 16/16] cryptodev: check if symmetric sessions are supported Pablo de Lara
2018-07-10 11:00 ` [dpdk-dev] [PATCH v6 00/16] Cryptodev API changes De Lara Guarch, Pablo
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