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charset="Windows-1252" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: Re: [dpdk-dev] [RFC] mark asym session-buffer non-reuseable X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Hi Akhil, Arek, Fiona, Since this require changes in other Asym PMD( qat) apart from openssl (we p= lan to send changes for this), so should we need to send any announcement on ABI breakage here before prop= osing patch v1? Thanks and regards Ayuj Verma ________________________________ From: Ayuj Verma Sent: 18 July 2019 15:17:54 To: Kusztal, ArkadiuszX; akhil.goyal@nxp.com Cc: Trahe, Fiona; Shally Verma; Sunila Sahu; Kanaka Durga Kotamarthy; dev@d= pdk.org Subject: Re: [RFC] mark asym session-buffer non-reuseable Hi Arek, Please see inline. Thanks and regards Ayuj Verma ________________________________ From: Kusztal, ArkadiuszX Sent: 17 July 2019 19:40 To: Ayuj Verma; akhil.goyal@nxp.com Cc: Trahe, Fiona; Shally Verma; Sunila Sahu; Kanaka Durga Kotamarthy; dev@d= pdk.org Subject: RE: [RFC] mark asym session-buffer non-reuseable Hi Ayuj, > -----Original Message----- > From: Ayuj Verma [mailto:ayverma@marvell.com] > Sent: Wednesday, July 17, 2019 2:34 PM > To: akhil.goyal@nxp.com > Cc: Kusztal, ArkadiuszX ; Trahe, Fiona > ; shallyv@marvell.com; ssahu@marvell.com; > kkotamarthy@marvell.com; dev@dpdk.org; Ayuj Verma > > Subject: [RFC] mark asym session-buffer non-reuseable > > This RFC proposes changes in asymmetric session usability of transform > structure. In current implementation asym xform is seen as temporary enti= ty > that can be re-used by application once sessions are initialized with it. > > This enforces PMD to copy all key buffers during session setup time. Sinc= e > life-time of sessions are small, so we can hold these buffers with sessio= n, [AK] - what is you expected session lifetime? (2,3,50 packets?) [Ayuj] In practical scenario like SSL, handshake will happen in some 10-15 = packets. > reducing memcpy time by marking these as read-only so that PMDs which > doesn=92t require any manipulation of xform data can directly use these > buffers in session configure. > > So, sending a proposal to mark xform as non-reusable till lifetime of ses= sion. > This will help PMDs to reduce session setup time. > > Ayuj Verma (1): > lib/crypto: mark asym session-buffer non-reuseable > > doc/guides/prog_guide/cryptodev_lib.rst | 6 ++++++ > lib/librte_cryptodev/rte_cryptodev_pmd.h | 2 +- > 2 files changed, 7 insertions(+), 1 deletion(-) > > -- > 1.8.3.1