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Tue, 8 Nov 2022 04:19:34 -0500 (EST) From: Thomas Monjalon <thomas@monjalon.net> To: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru> Cc: Rongwei Liu <rongweil@nvidia.com>, matan@nvidia.com, viacheslavo@nvidia.com, orika@nvidia.com, Aman Singh <aman.deep.singh@intel.com>, Yuying Zhang <yuying.zhang@intel.com>, Ferruh Yigit <ferruh.yigit@amd.com>, dev@dpdk.org, rasland@nvidia.com Subject: Re: [PATCH v3] ethdev: add hint when creating async transfer table Date: Tue, 08 Nov 2022 10:19:32 +0100 Message-ID: <2308337.OYXXYNVTWy@thomas> In-Reply-To: <6ec3f733-6370-d90f-b6b6-3eaceec7d0b2@oktetlabs.ru> References: <5d8d42b2-7011-cb46-7f2c-1b1019c4151e@oktetlabs.ru> <cc84a711-22a5-7bb6-3d22-08e9f88ee0b7@oktetlabs.ru> <6ec3f733-6370-d90f-b6b6-3eaceec7d0b2@oktetlabs.ru> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org 06/11/2022 11:02, Andrew Rybchenko: > On 10/4/22 11:31, Andrew Rybchenko wrote: > > On 9/28/22 12:24, Rongwei Liu wrote: > >> The transfer domain rule is able to match traffic wire/vf > >> origin and it means two directions' underlayer resource. > >> > >> In customer deployments, they usually match only one direction > >> traffic in single flow table: either from wire or from vf. Customer deployment is not an argument. > >> Introduce one new member transfer_mode into rte_flow_template_table_attr > >> to indicate the flow table direction property: from wire, from vf > >> or bi-direction(default). The origin is not a direction. We should update this sentence. > >> It helps to save underlayer memory also on insertion rate, and this > >> new field doesn't expose any matching criteira. Should be reworded. > >> By default, the transfer domain is to match bi-direction traffic, and > >> no behavior changed. This sentence is confusing, it should be removed. > >> 1. Match wire origin only > >> flow template_table 0 create group 0 priority 0 transfer wire_orig... > >> 2. Match vf origin only > >> flow template_table 0 create group 0 priority 0 transfer vf_orig... This testpmd example needs to be introduced with a sentence. > > Since wire_orig and vf_orig are just optional hints and not > > all PMDs are obliged to handle it, it does not impose any > > matching criteria. Yes > > So, example above are misleading and you > > need to add pattern items to highlight that corresponding rules > > are really wire_orig or vf_orig. This is template table creation, so I don't think there is more to add. What do you have in mind? > I'm sorry, but I still don't see how it is addressed in v4. I think the documentation in v4 is pretty clear. Do you see something in the doc which is confusing? The commit message needs rewording though.