From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 7797F947B for ; Thu, 8 Jun 2023 12:41:06 +0000 (UTC) Received: from mail-pg1-x52b.google.com (mail-pg1-x52b.google.com [IPv6:2607:f8b0:4864:20::52b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F20F2D48 for ; Thu, 8 Jun 2023 05:41:03 -0700 (PDT) Received: by mail-pg1-x52b.google.com with SMTP id 41be03b00d2f7-543a09ee32eso1212369a12.1 for ; Thu, 08 Jun 2023 05:41:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1686228062; x=1688820062; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date:from:to :cc:subject:date:message-id:reply-to; bh=o6uvPLwieY5RkBOZk+PD7M8YvflhokrnPtugOrS3QNE=; b=Mx3sJVE2F1ORzjGqe3xy6X7wsCEApK1+VCCgRvjXycaGUApi2Tp0szjSn8M0PPbOrY L6ZT2JbB809hrtAlSMLtJWgI0nHKoi/twmYAH9M+c9GMxpGAo8IGutngAyddmrMKefPf RCBU4mnCL8+y9Yt8bpiSs2ZXdu8RQpYfL+zv2Gdo/ZaxOJSXFBTVqBrjamKKAnk98XpL A7o0ukDCFy0RxCHOvs0/9rVuq8Zu9N2PmEmZ1tpwMEr4hiD84QamxF/SauHaF9MhLS8B H5kQh9NyXsLSH3lUag3Ko/bg3fjlMsun8spM10a3OnrUJn+QiGsJ/VHlyT4g7Qu0l+ww rEGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686228062; x=1688820062; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=o6uvPLwieY5RkBOZk+PD7M8YvflhokrnPtugOrS3QNE=; b=U07/aizfzQmR/TQj5Smec1v3MCsz73WF28ZtnkI4tqWZOC00klBziak2S93uwL3CHO LFn27kT+Pp8xbup19vbhFv7SLKQEWE+BclVa58B+BSrpfxr2Hui0suhTQ72D72Lccoz3 6VQvnjVTIjDe7bFkzaoZq2vLCPOEAJJZ3+y7oz4wgU8f3Ui1AwNJG7NiYP0puepbOuiF fxhhWjvGl/UaSs8ClZU+dgDKvi76eCH0X+Rfzc4X5XV3ZKRurtEKUkGTJWy0snHoY2wv EVnOAE6yjvrZkcK4RNdJv7tSsqKjxzoyf0BXWz9vmh34e33G7wQ94prUW5WRvVgKhpyg azXA== X-Gm-Message-State: AC+VfDzKdnclaHfqY1+aE0FKXPehGWrsgRv6M6S9vYQMxjshupNMols6 aJEUTajRohyQ8nBf8vzJ4puIEqlJuOmg8Cs6Fg== X-Google-Smtp-Source: ACHHUZ5poAB/V7RXQ3dOzoAJckBX+G4y1Bj7UJT9KsKdnWi22t9GzGjV2GyemH6S7dwhra7PXiL1qQ== X-Received: by 2002:a17:90b:314c:b0:25b:83ca:2b75 with SMTP id ip12-20020a17090b314c00b0025b83ca2b75mr176896pjb.3.1686228062475; Thu, 08 Jun 2023 05:41:02 -0700 (PDT) Received: from thinkpad ([117.202.186.138]) by smtp.gmail.com with ESMTPSA id 30-20020a17090a01de00b00259a3c99978sm1285622pjd.17.2023.06.08.05.40.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jun 2023 05:41:02 -0700 (PDT) Date: Thu, 8 Jun 2023 18:10:57 +0530 From: Manivannan Sadhasivam To: Andrew Lunn Cc: Jakub Kicinski , davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, mhi@lists.linux.dev, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, loic.poulain@linaro.org Subject: Re: [PATCH v2 0/2] Add MHI Endpoint network driver Message-ID: <20230608124057.GD5672@thinkpad> References: <20230607152427.108607-1-manivannan.sadhasivam@linaro.org> <20230607094922.43106896@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-Spam-Status: No, score=-0.6 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_SORBS_WEB,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net On Wed, Jun 07, 2023 at 08:13:32PM +0200, Andrew Lunn wrote: > On Wed, Jun 07, 2023 at 09:49:22AM -0700, Jakub Kicinski wrote: > > On Wed, 7 Jun 2023 20:54:25 +0530 Manivannan Sadhasivam wrote: > > > This series adds a network driver for the Modem Host Interface (MHI) endpoint > > > devices that provides network interfaces to the PCIe based Qualcomm endpoint > > > devices supporting MHI bus (like Modems). This driver allows the MHI endpoint > > > devices to establish IP communication with the host machines (x86, ARM64) over > > > MHI bus. > > > > > > On the host side, the existing mhi_net driver provides the network connectivity > > > to the host. > > > > Why are you posting the next version before the discussion on the > > previous one concluded? :| > > > > In any case, I'm opposed to reuse of the networking stack to talk > > to firmware. It's a local device. The networking subsystem doesn't > > have to cater to fake networks. Please carry: > > > > Nacked-by: Jakub Kicinski > > Remote Processor Messaging (rpmsg) Framework does seem to be what is > supposed to be used for these sorts of situations. Not that i know > much about it. > Rpmsg is another messaging protocol used for talking to the remote processor. MHI is somewhat similar in terms of usecase but it is a proprietary protocol used by Qcom for their devices. - Mani > Andrew -- மணிவண்ணன் சதாசிவம்