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=-7.4 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 D7355C55178 for ; Mon, 26 Oct 2020 13:56:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 752C32463D for ; Mon, 26 Oct 2020 13:56:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="YVpbzR1S" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1780813AbgJZN4t (ORCPT ); Mon, 26 Oct 2020 09:56:49 -0400 Received: from m42-4.mailgun.net ([69.72.42.4]:30936 "EHLO m42-4.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1774828AbgJZN4s (ORCPT ); Mon, 26 Oct 2020 09:56:48 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1603720607; h=Content-Transfer-Encoding: Content-Type: In-Reply-To: MIME-Version: Date: Message-ID: From: References: Cc: To: Subject: Sender; bh=6WReYE7EsI0TzLP4fHRo6o5oMyKnwMkBqs5Ms1eH5XM=; b=YVpbzR1SsSWlG3V688m4DsZ5JlYHzTYFiNrB1UNdIdzhTyYZYU260Fqp1xo86fOb6rvNe4Rx 6CzVMqJDn9dxGtSzDbdUwGVaIWZ25gmcAXHVBXE595BiDjATHy+SqnM7AORTTCuKzyIG/H/F hInIYP03K1Ys+WkiAu78vk11yfM= X-Mailgun-Sending-Ip: 69.72.42.4 X-Mailgun-Sid: WyJiZjI2MiIsICJuZXRkZXZAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-west-2.postgun.com with SMTP id 5f96d5936b827c4eefbbd18f (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 26 Oct 2020 13:56:35 GMT Sender: jhugo=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id C74A9C43385; Mon, 26 Oct 2020 13:56:35 +0000 (UTC) Received: from [10.226.59.216] (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jhugo) by smtp.codeaurora.org (Postfix) with ESMTPSA id 520CDC433C9; Mon, 26 Oct 2020 13:56:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 520CDC433C9 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=jhugo@codeaurora.org Subject: Re: [PATCH v9 3/4] docs: Add documentation for userspace client interface To: Dan Williams , Jakub Kicinski , Hemant Kumar Cc: manivannan.sadhasivam@linaro.org, gregkh@linuxfoundation.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, bbhatt@codeaurora.org, loic.poulain@linaro.org, netdev@vger.kernel.org References: <1603495075-11462-1-git-send-email-hemantk@codeaurora.org> <1603495075-11462-4-git-send-email-hemantk@codeaurora.org> <20201025144627.65b2324e@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> <4e4dc63d0a0b5a820f7a70e30e29746fd6735a96.camel@redhat.com> From: Jeffrey Hugo Message-ID: <7934e50d-72bd-f20a-54da-33f29c66c3fa@codeaurora.org> Date: Mon, 26 Oct 2020 07:56:33 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.3.2 MIME-Version: 1.0 In-Reply-To: <4e4dc63d0a0b5a820f7a70e30e29746fd6735a96.camel@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 10/26/2020 7:46 AM, Dan Williams wrote: > On Mon, 2020-10-26 at 07:38 -0600, Jeffrey Hugo wrote: >> On 10/25/2020 3:46 PM, Jakub Kicinski wrote: >>> On Fri, 23 Oct 2020 16:17:54 -0700 Hemant Kumar wrote: >>>> +UCI driver enables userspace clients to communicate to external >>>> MHI devices >>>> +like modem and WLAN. UCI driver probe creates standard character >>>> device file >>>> +nodes for userspace clients to perform open, read, write, poll >>>> and release file >>>> +operations. >>> >>> What's the user space that talks to this? >>> >> >> Multiple. >> >> Each channel has a different purpose. There it is expected that a >> different userspace application would be using it. >> >> Hemant implemented the loopback channel, which is a simple channel >> that >> just sends you back anything you send it. Typically this is consumed >> by >> a test application. >> >> Diag is a typical channel to be consumed by userspace. This is >> consumed >> by various applications that talk to the remote device for >> diagnostic >> information (logs and such). > > QMI too? > Dan Interesting question. My product doesn't use QMI. I would expect that all QMI runs through Router these days, but I am seeing some QMI channels in the downstream source. Hemant, Do you know what is the usecase for the QMI0/QMI1 channels? -- Jeffrey Hugo Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.