From: Tomasz Duszynski <tdu@semihalf.com>
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" <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 08:11:37 +0200 [thread overview]
Message-ID: <20180613061137.GB1913@sh> (raw)
In-Reply-To: <E115CCD9D858EF4F90C690B0DCB4D8977F8D2DC0@IRSMSX108.ger.corp.intel.com>
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?
>
> 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 6:11 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 [this message]
2018-06-13 8:23 ` De Lara Guarch, Pablo
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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