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=-7.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 4FBBBC433E0 for ; Tue, 16 Mar 2021 17:57:18 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0178265101 for ; Tue, 16 Mar 2021 17:57:17 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0178265101 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45048 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lMDwT-00059K-1P for qemu-devel@archiver.kernel.org; Tue, 16 Mar 2021 13:57:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55866) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lMDNf-0003ma-5d for qemu-devel@nongnu.org; Tue, 16 Mar 2021 13:21:20 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:39589) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1lMDNd-0001s9-1Z for qemu-devel@nongnu.org; Tue, 16 Mar 2021 13:21:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615915275; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type; bh=8wu1vYG8HEXfrRPu8g3G2xk239QW+BZfTjBIYtEbLZM=; b=aeGMsAYDFQPKKkXne0Pu+tBxiZE3G/9pZ221rvmGuk8Ni7rK4eB82tu19HEdWZWZ+NaUm0 oy1ujRY//PbBx91z0j+37XBqYP5VAivmiLM96Tc892YXiViioiv2FtGgm4EABqd6EB1xqG 5M3B1CclWbwrheqOJdy7ymMYghgIXlI= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-448-p-74BMGrMjmvW5gwS6cYoA-1; Tue, 16 Mar 2021 13:21:13 -0400 X-MC-Unique: p-74BMGrMjmvW5gwS6cYoA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 6001283DD20 for ; Tue, 16 Mar 2021 17:21:12 +0000 (UTC) Received: from work-vm (ovpn-113-133.ams2.redhat.com [10.36.113.133]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 82D1A60C0F; Tue, 16 Mar 2021 17:21:05 +0000 (UTC) Date: Tue, 16 Mar 2021 17:21:02 +0000 From: "Dr. David Alan Gilbert" To: berrange@redhat.com, kraxel@redhat.com, victortoso@redhat.com Subject: Half a usb-redir idea Message-ID: MIME-Version: 1.0 User-Agent: Mutt/2.0.5 (2021-01-21) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dgilbert@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Received-SPF: pass client-ip=63.128.21.124; envelope-from=dgilbert@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.25, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi, I've got a half-baked idea, which I thought might be worth mentioning. How hard would it be to give qemu a usbredir server rather than client? It would have nothing guest visible but would look logically like the front (?) half of a usb interface; then you could use all of the existing qemu emulated and passthrough device code, to build a usb hierarchy and present it to a remote qemu. You'd get the ability to do emulated USB CDROM/storage, audio, network and the glue for host USB connection (and smart cards??) - all in one client that you can then use for connecting to a remote qemu. The next step of that is to make something analogous to a qemu-storage-daemon, but for USB, so you have something that can do all that USB stuff without actually having any processors. The even crazier step would then be to add a VNC client, and then you have an almost complete remote client. Dave -- Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK