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Thu, 10 Apr 2025 12:58:43 +0000 Date: Thu, 10 Apr 2025 14:58:28 +0200 From: Larysa Zaremba To: Leon Romanovsky CC: , Tony Nguyen , "David S. Miller" , "Eric Dumazet" , Jakub Kicinski , Paolo Abeni , Simon Horman , Jonathan Corbet , Przemek Kitszel , Jiri Pirko , Tatyana Nikolova , "Andrew Lunn" , Alexander Lobakin , Michael Ellerman , "Maciej Fijalkowski" , Lee Trager , Madhavan Srinivasan , Sridhar Samudrala , Jacob Keller , Michal Swiatkowski , Mateusz Polchlopek , Ahmed Zaki , , , , "Karlsson, Magnus" , Emil Tantilov , "Madhu Chittim" , Josh Hay , "Milena Olech" , , "Singhai, Anjali" , Phani R Burra Subject: Re: [PATCH iwl-next 05/14] libeth: add control queue support Message-ID: References: <20250408124816.11584-1-larysa.zaremba@intel.com> <20250408124816.11584-6-larysa.zaremba@intel.com> <20250410082137.GO199604@unreal> <20250410112349.GP199604@unreal> Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20250410112349.GP199604@unreal> X-ClientProxiedBy: VE1PR03CA0038.eurprd03.prod.outlook.com (2603:10a6:803:118::27) To SN7PR11MB7540.namprd11.prod.outlook.com (2603:10b6:806:340::7) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN7PR11MB7540:EE_|PH7PR11MB6906:EE_ X-MS-Office365-Filtering-Correlation-Id: 16dd1de4-4789-4b36-bdbc-08dd782f6bf2 X-LD-Processed: 46c98d88-e344-4ed4-8496-4ed7712e255d,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|1800799024|7416014|376014|10070799003; 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There are multiple syzkaller > reports per-cycle where module A tries to access module C, which already > doesn't exist because it was proxied through module B. Are there similar reports for libeth and libie modules when iavf is enabled? It is basically the same hierarchy. (iavf uses both libeth and libie, libie depends on libeth). I am just trying to understand, is this a regular situation or did I just mess smth up? > > > > > As for the module separation, I think there is no harm in keeping it modular. > > Syzkaller reports disagree with you. > Could you please share them? > > We intend to use basic libeth (libeth_rx) in drivers that for sure have no use > > for libeth_cp. libeth_pci and libeth_cp separation is more arbitral, as we have > > no plans for now to use them separately. > > So let's not over-engineer it. > > > > > Module dependencies are as follows: > > > > libeth_rx and libeth_pci do not depend on other modules. > > libeth_cp depends on both libeth_rx and libeth_pci. > > idpf directly uses libeth_pci, libeth_rx and libeth_cp. > > ixd directly uses libeth_cp and libeth_pci. > I need to amend this: libeth_cp does not depend on libeth_pci in terms of module namespace, it only uses the header to access struct device that is stored in libeth_pci-specific mmio_info. > You can do whatever module architecture for netdev devices, but if you > plan to expose it to RDMA devices, I will vote against any deep layered > module architecture for the drivers. > > BTW, please add some Intel prefix to the modules names, they shouldn't > be called in generic names like libeth, e.t.c > We did not think this would be a problem, intel has a tradition of calling the modules pretty ambiguously. > Thanks > > > > > [0] https://lore.kernel.org/netdev/61bfa880-6a88-4eac-bab7-040bf72a11ef@intel.com/ > > > > > Thanks