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From: Akhil Goyal <gakhil@marvell.com>
To: Akhil Goyal <gakhil@marvell.com>,
	Thomas Monjalon <thomas@monjalon.net>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"matan@nvidia.com" <matan@nvidia.com>
Cc: Ray Kinsella <mdr@ashroe.eu>, Neil Horman <nhorman@tuxdriver.com>,
	Declan Doherty <declan.doherty@intel.com>
Subject: Re: [dpdk-dev] [EXT] [PATCH v5] cryptodev: support multiple cipher data-units
Date: Thu, 15 Apr 2021 19:01:07 +0000	[thread overview]
Message-ID: <MW2PR18MB228490086BC9B6D99282F3F2D84D9@MW2PR18MB2284.namprd18.prod.outlook.com> (raw)
In-Reply-To: <MW2PR18MB22849E41AFC7BEBC88B7F15AD84D9@MW2PR18MB2284.namprd18.prod.outlook.com>

> > From: Matan Azrad <matan@nvidia.com>
> >
> > In cryptography, a block cipher is a deterministic algorithm operating
> > on fixed-length groups of bits, called blocks.
> >
> > A block cipher consists of two paired algorithms, one for encryption
> > and the other for decryption. Both algorithms accept two inputs:
> > an input block of size n bits and a key of size k bits; and both yield
> > an n-bit output block. The decryption algorithm is defined to be the
> > inverse function of the encryption.
> >
> > For AES standard the block size is 16 bytes.
> > For AES in XTS mode, the data to be encrypted\decrypted does not have to
> > be multiple of 16B size, the unit of data is called data-unit.
> > The data-unit size can be any size in range [16B, 2^24B], so, in this
> > case, a data stream is divided into N amount of equal data-units and
> > must be encrypted\decrypted in the same data-unit resolution.
> >
> > For ABI compatibility reason, the size is limited to 64K (16-bit field).
> > The new field dataunit_len is inserted in a struct padding hole,
> > which is only 2 bytes long in 32-bit build.
> > It could be moved and extended later during an ABI-breakage window.
> >
> > The current cryptodev API doesn't allow the user to select a specific
> > data-unit length supported by the devices.
> > In addition, there is no definition how the IV is detected per data-unit
> > when single operation includes more than one data-unit.
> >
> > That causes applications to use single operation per data-unit even though
> > all the data is continuous in memory what reduces datapath performance.
> >
> > Add a new feature flag to support multiple data-unit sizes, called
> > RTE_CRYPTODEV_FF_CIPHER_MULTIPLE_DATA_UNITS.
> > Add a new field in cipher capability, called dataunit_set,
> > where the devices can report the range of the supported data-unit sizes.
> > Add a new cipher transformation field, called dataunit_len, where the user
> > can select the data-unit length for all the operations.
> >
> > All the new fields do not change the size of their structures,
> > by filling some struct padding holes.
> > They are added as exceptions in the ABI check file libabigail.abignore.
> >
> > Using a bitmap to report the supported data-unit sizes capability allows
> > the devices to report a range simply as same as the user to read it
> > simply. also, thus sizes are usually common and probably will be shared
> > among different devices.
> >
> > Signed-off-by: Matan Azrad <matan@nvidia.com>
> > Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
> > ---
> Acked-by: Akhil Goyal <gakhil@marvell.com>

Applied to dpdk-next-crypto

This patch is causing ABI breakage at my end, but since CI is passing, I am applying this patch.
I believe my libabigail version is older than what CI is using.

@thomas : Please pull crypto tree to main and send the dependent patches again so that CI can run on them.

Regards,
Akhil

  reply	other threads:[~2021-04-15 19:01 UTC|newest]

Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-04 14:34 [dpdk-dev] [PATCH] cryptodev: support multiple cipher block sizes Matan Azrad
2021-02-05 16:50 ` Zhang, Roy Fan
2021-02-08 12:10 ` Kusztal, ArkadiuszX
2021-02-08 13:36   ` Matan Azrad
2021-02-08 15:28     ` Kusztal, ArkadiuszX
2021-02-08 18:23       ` Matan Azrad
2021-02-26  7:50         ` Kusztal, ArkadiuszX
2021-02-26  5:01 ` [dpdk-dev] [EXT] " Anoob Joseph
2021-03-01  7:55   ` Matan Azrad
2021-03-01  9:29     ` Kusztal, ArkadiuszX
2021-03-14 12:18 ` [dpdk-dev] [PATCH] cryptodev: support multiple cipher data-units Matan Azrad
2021-04-04 15:17   ` [dpdk-dev] [PATCH v2] " Matan Azrad
     [not found]   ` <20210404150809.2154241-1-matan@nvidia.com>
2021-04-13 12:02     ` [dpdk-dev] [EXT] " Akhil Goyal
2021-04-13 16:39       ` Thomas Monjalon
2021-04-13 18:19 ` [dpdk-dev] [PATCH v3] " Thomas Monjalon
2021-04-13 19:48   ` Matan Azrad
2021-04-13 20:42 ` [dpdk-dev] [PATCH v4] " Thomas Monjalon
2021-04-14 18:37   ` [dpdk-dev] [EXT] " Akhil Goyal
2021-04-14 19:38     ` Thomas Monjalon
2021-04-14 19:43       ` Akhil Goyal
2021-04-14 20:17         ` Thomas Monjalon
2021-04-14 20:15 ` [dpdk-dev] [PATCH] doc: announce extension of crypto data-unit length Thomas Monjalon
2021-05-17 19:41   ` [dpdk-dev] [EXT] " Akhil Goyal
2021-07-31 17:10     ` Thomas Monjalon
2021-07-31 18:58   ` [dpdk-dev] " Ajit Khaparde
2021-08-02 11:10   ` Matan Azrad
2021-08-02 12:04   ` Thomas Monjalon
2021-04-14 20:21 ` [dpdk-dev] [PATCH v5] cryptodev: support multiple cipher data-units Thomas Monjalon
2021-04-15  8:35   ` [dpdk-dev] [EXT] " Akhil Goyal
2021-04-15 19:01     ` Akhil Goyal [this message]
2021-04-15 19:31       ` David Marchand

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