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[159.2.239.150]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-54b1086db63sm24026871cf.11.2026.11.04.05.39.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Nov 2026 05:39:39 -0800 (PST) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1xObDG-0000000GBDX-3ZyX; Wed, 04 Nov 2026 09:39:38 -0400 Date: Wed, 4 Nov 2026 09:39:38 -0400 From: Jason Gunthorpe To: Doug Ledford Cc: Andrew Lunn , Jakub Kicinski , Slingshot Open Source Team , Nathan Chancellor , Nicolas Schier , Richard Cochran , Andrew Lunn , "David S. Miller" , Eric Dumazet , Paolo Abeni , Sumit Semwal , Christian =?utf-8?B?S8O2bmln?= , Guenter Roeck , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-kbuild@vger.kernel.org, Sandeep Bhoot , Iraimani P , Mamila Santosh , Leon Romanovsky Subject: Re: [PATCH 00/23] Subject: [PATCH net-next 00/23] net/hpe: add HPE Slingshot NIC drivers Message-ID: <20261104133938.GP3889730@ziepe.ca> References: <20261030-cxi-netdev-submission-v1-0-8c2c391cc283@hpe.com> <20261030151121.1f232b50@kernel.org> <7d4583c2-e8dc-4ffb-bc45-e2121f824b14@lunn.ch> <2f831f13-58ff-40ca-a76f-3aca647012b6@lunn.ch> <3418b0f9-d053-4be1-81a0-fc938fc5a7ac@hpe.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <3418b0f9-d053-4be1-81a0-fc938fc5a7ac@hpe.com> On Tue, Nov 03, 2026 at 08:21:05PM -0800, Doug Ledford wrote: > Top-posting an executive summary: HPE's ask is whether we should submit > this driver through the netdev community or the rdma community. HPE > prefers netdev, with RDMA as an aux driver, but needs the maintainers’ > call. A minimal Ethernet driver is about 48k lines plus 36k lines of > mostly machine-generated headers (details below). It depends on a simple question: can you create a functional ultra ethernet device without a netdev and without an IP or routing table? Like IB? If yes then maybe you could do RDMA first. If no, then you must get a netdev first. Jason