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 5DFB5745C2; Thu, 4 Apr 2024 21:34:10 +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=1712266450; cv=none; b=gFARZm4Vf8f5DrwcUDyJucbrKxpprG9Dqx5nRn19D7bqvSUGViVzmCbwm5+j57H3sQpeT+WmcmSfQvdQjis/bIzIlmHwGkVLkBVGSYKRTpY1msafzsm6mqwG54pPAJmf8Ze95vDkjCf/5liP7qhDmQVauQt2jXlIE72xFM9sK8E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712266450; c=relaxed/simple; bh=MvO4hn6NceYnIx1psf+rZClmgr9/kqbNuQw4jwCybUo=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tGtd2eMm/DH9jhwVh7CoJwIruFnxLQHcLBAIQlLrnWfEXWo03W9UVrG1B/orEFre2poDsRAM8MsXRj7FgYVgP1sBH8J4ijZ1xmX/FF3GVCW8gk56Lw/7mX8fBim+YqVrh5vT25EUy1YRGEz+zQH9Znpyv9+s5pi2HOAUVZHBuyw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hGEe3nIl; 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="hGEe3nIl" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 111D7C433F1; Thu, 4 Apr 2024 21:34:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712266449; bh=MvO4hn6NceYnIx1psf+rZClmgr9/kqbNuQw4jwCybUo=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=hGEe3nIlsl2LY3b6fNhY82fq0TjwggHOYHq+XKfEVZWZNEP1RGwR4GKxprMif+jkh 3fvBcREXd3TxdL5GamnEG+A6/mZ+rKP8aaSNAItzn/4HN3HB8My+kUfaYNSh3oarSd OK1m3i4qS0lZxLXVYtGJtH+dg6Q42PyU7wwSwVCz+ZAWRX9DAiJK27B6myCvBqwLPu XeeHup5JEeJLwuFxWKWFKFPpF4AD/aOr/8v6uSjGtJn3mZuB1mWT30zMRBLus2eWOV PTEKSkoiWTKb7923YStB7hkm3cQVy6DBLyLdcpKEYTUZ7b3qL8VRNDkxDKsd1S6yOg yCUBV3S4Mx4hQ== Date: Thu, 4 Apr 2024 14:34:07 -0700 From: Jakub Kicinski To: Jason Gunthorpe Cc: Edward Cree , David Ahern , Greg Kroah-Hartman , Christoph Hellwig , Saeed Mahameed , Arnd Bergmann , Leon Romanovsky , Jiri Pirko , Leonid Bloch , Itay Avraham , Saeed Mahameed , Aron Silverton , linux-kernel@vger.kernel.org, "netdev@vger.kernel.org" , Andy Gospodarek Subject: Re: [PATCH V4 0/5] mlx5 ConnectX control misc driver Message-ID: <20240404143407.64b44a88@kernel.org> In-Reply-To: <20240404204454.GO1723999@nvidia.com> References: <20240322135826.1c4655e2@kernel.org> <20240322154027.5555780a@kernel.org> <1cd2a70c-17b8-4421-b70b-3c0199a84a6a@kernel.org> <0ea32dd4-f408-5870-77eb-f18899f1ad44@gmail.com> <20240402184055.GP946323@nvidia.com> <83025203-fefb-d828-724d-259e5df7c1b2@gmail.com> <20240404183305.GM1723999@nvidia.com> <20240404125339.14695f27@kernel.org> <20240404204454.GO1723999@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Thu, 4 Apr 2024 17:44:54 -0300 Jason Gunthorpe wrote: > > To my knowledge the "customizations" are mostly around fitting into OCP > > servers. > > Nope. I understand it is significant. If Meta had to work with a COTS > environment like a HP/Dell customer then Meta would have a list of > flash configurables to set. I think you greatly underestimate the > privilege of being at a hyperscaler and having vendors create custom > products just for you.. > > > Those unfamiliar with how hyperscalers operate can mentally > > replace $hyperscaler with HP or Dell in your message. Minus all the > > proprietary OOB management stuff those guys also provide. > > A significant Dell customer will get a server pre-populated with a NIC > with some generic Dell configuration. In most cases the customer will > have to then program the flash to match their needs. Set a specific FW > version, set site specific configurables, etc. > > Similar to how a Dell customer will have to change the BIOS settings > in the Dell to match their needs. I can only guess that you are again thinking about RDMA/HPC. Flashing tunables is not a workable solution for extremely varied and ephemeral TCP/IP workloads :|