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[84.16.102.26]) by smtp.gmail.com with ESMTPSA id p8sm15606415wre.11.2020.05.10.22.32.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 10 May 2020 22:32:38 -0700 (PDT) Date: Mon, 11 May 2020 07:32:37 +0200 From: Jiri Pirko To: Dave Taht Cc: Linux Kernel Network Developers , "David S. Miller" , Jakub Kicinski , parav@mellanox.com, yuvalav@mellanox.com, jgg@ziepe.ca, Saeed Mahameed , leon@kernel.org, andrew.gospodarek@broadcom.com, michael.chan@broadcom.com, moshe@mellanox.com, ayal@mellanox.com, Eran Ben Elisha , vladbu@mellanox.com, kliteyn@mellanox.com, dchickles@marvell.com, sburla@marvell.com, fmanlunas@marvell.com, Tariq Toukan , oss-drivers@netronome.com, Shannon Nelson , drivers@pensando.io, aelior@marvell.com, GR-everest-linux-l2@marvell.com, grygorii.strashko@ti.com, mlxsw , Ido Schimmel , markz@mellanox.com, jacob.e.keller@intel.com, valex@mellanox.com, linyunsheng@huawei.com, lihong.yang@intel.com, vikas.gupta@broadcom.com, sridhar.samudrala@intel.com Subject: Re: [RFC v2] current devlink extension plan for NICs Message-ID: <20200511053237.GB2245@nanopsycho> References: <20200501091449.GA25211@nanopsycho.orion> <20200510144557.GA7568@nanopsycho> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Sun, May 10, 2020 at 06:30:59PM CEST, dave.taht@gmail.com wrote: >On Sun, May 10, 2020 at 7:46 AM Jiri Pirko wrote: >> >> Hello guys. >> >> Anyone has any opinion on the proposal? Or should I take it as a silent >> agreement? :) >> >> We would like to go ahead and start sending patchsets. > >I gotta say that the whole thing makes my head really hurt, and while >this conversation is about how to go about configuring things, >I've been unable to get a grip on how flows will actually behave with >these offloads present. As you said, this is about configuration. Not the actual packet processing. > >My overall starting point for thinking about this stuff was described >in this preso to broadcom a few years back: >http://flent-fremont.bufferbloat.net/~d/broadcom_aug9.pdf > >More recently I did what I think is my funniest talk ever on these >subjects: https://blog.apnic.net/2020/01/22/bufferbloat-may-be-solved-but-its-not-over-yet/ > >Make some popcorn, take a look. :) I should probably have covered >ecn's (mis)behaviors at the end, but I didn't. > >Steven hemminger's lca talk on these subjects was also a riot... > >so somehow going from my understanding of how stuff gets configured, >to the actual result, is needed, for me to have any opinion at all. >You >have this stuff basically running already? Can you run various >flent.org tests through it? > >> >> Thanks! > > > >-- >"For a successful technology, reality must take precedence over public >relations, for Mother Nature cannot be fooled" - Richard Feynman > >dave@taht.net CTO, TekLibre, LLC Tel: 1-831-435-0729