From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D8BA2C4338F for ; Mon, 23 Aug 2021 13:04:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B8EA061374 for ; Mon, 23 Aug 2021 13:04:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237161AbhHWNFE (ORCPT ); Mon, 23 Aug 2021 09:05:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237098AbhHWNFD (ORCPT ); Mon, 23 Aug 2021 09:05:03 -0400 Received: from mail-qv1-xf2e.google.com (mail-qv1-xf2e.google.com [IPv6:2607:f8b0:4864:20::f2e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6DAE2C061575 for ; Mon, 23 Aug 2021 06:04:21 -0700 (PDT) Received: by mail-qv1-xf2e.google.com with SMTP id jv8so9591736qvb.3 for ; Mon, 23 Aug 2021 06:04:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ziepe.ca; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=f50vC7zIeMwqepv4RFwpH7mORqkN8Mr21/+qOWLlAYI=; b=fLBg8hJB3YxHLiRx6SMZ08NW60UMGWMS+FOsUqJMvTgltf9rnMZsu1cIxbm8f0yXKP wg7SEWN1pCyevpBSaxrytzfvCdcUMCJ8fnTJBWhizDkNrWqocdQW4G0nntRvNWPGFJ0u ZjfP0vTVwSEcpsqWif3oosDJVguCeEjHNyCAFfRUuXXViX9643iur529Q9KRGHyIcW6T GRUzYrjGxEjQMqg5+9Q4S1N/daCQTX2Oc1OnDCsJCiCDbNR6ZgpxDem287KfPr24EFRb CjaVTeZ6osyOmjwpdLVX2KHwMBthhnROibBefHDGUF1e20Bb0E2IaTMHcBeJ/y1AoLfg 1ARA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=f50vC7zIeMwqepv4RFwpH7mORqkN8Mr21/+qOWLlAYI=; b=Gdu8J+3DDGTB0PXaHVIMhQNgN6+qWgwsjGU1CaYZe3+XFcoD8ypIfcTnDAqX2eHWrH vqdrXMwoFnWXSWqGiPi70TcohwFY2v7H2L8KoE/JHyk/FoQdC1ijoGFrvZltewKohGQa FlQ2ewttygX9Q2aGDP9UVYzS3P5amIolkNW+x0xRezS5GXDyY3V0A2t3lBICShv04yZh e4pBGk8v1pYoCnDQy3IcUOmismCG4PuyVRYMnWwoM79GCU7EEElNcENQkT/Z0s7kvOLh mC515Ubmg71Sa2IFikeXbc3MwDOwKY7IluE1MXZNk7pZ8fL0AcCbjL5oBN7gTQ8X6OuX KV4w== X-Gm-Message-State: AOAM530dluGRnswv83kYPrnIbbqrhOUunPxRqvj3Fm3mK2FSJJXHV+Og WlhaUu5mABEm2tWKhS4jQFaAXOtrVt0jlg== X-Google-Smtp-Source: ABdhPJyhXO416IdBDrNzxSPX6GBkG/NURoOzbhXsDjiUNJUg4POnRfuzLVC3Dv4qg5BUBG+QET1nNg== X-Received: by 2002:a05:6214:c69:: with SMTP id t9mr33312470qvj.28.1629723860598; Mon, 23 Aug 2021 06:04:20 -0700 (PDT) Received: from ziepe.ca (hlfxns017vw-142-162-113-129.dhcp-dynamic.fibreop.ns.bellaliant.net. [142.162.113.129]) by smtp.gmail.com with ESMTPSA id h13sm8264610qkk.67.2021.08.23.06.04.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Aug 2021 06:04:19 -0700 (PDT) Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1mI9ch-003GE6-6D; Mon, 23 Aug 2021 10:04:19 -0300 Date: Mon, 23 Aug 2021 10:04:19 -0300 From: Jason Gunthorpe To: Oded Gabbay Cc: linux-rdma , Greg Kroah-Hartman Subject: Re: Creating new RDMA driver for habanalabs Message-ID: <20210823130419.GA543798@ziepe.ca> References: <20210822223128.GZ543798@ziepe.ca> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org On Mon, Aug 23, 2021 at 11:53:48AM +0300, Oded Gabbay wrote: > Do you see any issue with that ? It should work out, without a netdev you have to be more careful about addressing and can't really use the IP addressing modes. But you'd have a singular hardwired roce gid in this case and act more like an IB device than a roce device. Where you might start to run into trouble is you probably want to put all these ports under a single struct ib_device and we've been moving away from having significant per-port differences. But I suspect it can still work out. Jason