From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 60A211E8337; Sat, 8 Mar 2025 18:46:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741459615; cv=none; b=L9aNVfqephq7IOSjIYJhAMHJAgoz7Ob72/3j3KKGxLuq0CLWXWpEOMj6tPuxcrn3XbwTdhSkVJbwVME7ckI1QzkdBv8dkgHO6GZT76vG07oVSvx+LAFTDaNPZSWcdh2VX19fRUyIbLmheYsyjmy3u1vEQglxXFiVJtQ8entYEBc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741459615; c=relaxed/simple; bh=QODW/xwdjtYBiu31jaIXaqBRk3n3h2GEjYl7HDeNYwM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=tIDCxJzkCm6i8TUys8WAl0HDffHIVnmGJK2jG4W1ROLHuVM83cJIsYGQJwgl0R3aNe1fCD41goNzo9FFvrgDAaL5Od4AZkEPqJNcUL8ithAOzt7VBL47gdtfyMnPv2yHKJ8rj3SPuB3mEqKDlsdnFloulhHc5fw1UMzz4J4eNdo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=U5NWYhpb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="U5NWYhpb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33084C4CEE3; Sat, 8 Mar 2025 18:46:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1741459614; bh=QODW/xwdjtYBiu31jaIXaqBRk3n3h2GEjYl7HDeNYwM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=U5NWYhpbvDKerFfGR3u/9yd9QYvvpB2T0zKDzzOl2FaggNQA7vuH4ztTWPMKAjnYV V3xVCBWtoKc32A0q+URMtUl1yuoXn1w3S+KHidfgGAgkPS0aFSm5i0nv+SxBDZC/xr 7/h7xr4vX/rDnQbIPu8XUyNLcyLosK/EFM6dsbGDFcwR5vItpEzgGSRipZn1H9lHfg vq65E+w5R6zYDFc38R+YbRVZ6ZrnYTiUYifDOZgW8tvx+Zv2Rd/NTgw5QYKuzdofb5 84fv8M4KrPTUCF6R6iNXufz68J/so6KU8iDWtsmCNxV5FZrSRXIm/Vv8+9dd/u4oHZ 8IsJ/RUIEOSJA== Date: Sat, 8 Mar 2025 20:46:50 +0200 From: Leon Romanovsky To: Nikolay Aleksandrov Cc: netdev@vger.kernel.org, shrijeet@enfabrica.net, alex.badea@keysight.com, eric.davis@broadcom.com, rip.sohan@amd.com, dsahern@kernel.org, bmt@zurich.ibm.com, roland@enfabrica.net, winston.liu@keysight.com, dan.mihailescu@keysight.com, kheib@redhat.com, parth.v.parikh@keysight.com, davem@redhat.com, ian.ziemba@hpe.com, andrew.tauferner@cornelisnetworks.com, welch@hpe.com, rakhahari.bhunia@keysight.com, kingshuk.mandal@keysight.com, linux-rdma@vger.kernel.org, kuba@kernel.org, pabeni@redhat.com, Jason Gunthorpe Subject: Re: [RFC PATCH 00/13] Ultra Ethernet driver introduction Message-ID: <20250308184650.GV1955273@unreal> References: <20250306230203.1550314-1-nikolay@enfabrica.net> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250306230203.1550314-1-nikolay@enfabrica.net> On Fri, Mar 07, 2025 at 01:01:50AM +0200, Nikolay Aleksandrov wrote: > Hi all, <...> > Ultra Ethernet is a new RDMA transport. Awesome, and now please explain why new subsystem is needed when drivers/infiniband already supports at least 5 different RDMA transports (OmniPath, iWARP, Infiniband, RoCE v1 and RoCE v2). Maybe after this discussion it will be very clear that new subsystem is needed, but at least it needs to be stated clearly. An please CC RDMA maintainers to any Ultra Ethernet related discussions as it is more RDMA than Ethernet. Thanks