From patchwork Thu Jul 4 12:48:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laurent Vivier X-Patchwork-Id: 13723703 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 5A344C30653 for ; Thu, 4 Jul 2024 12:50:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sPLtd-0004Vz-JF; Thu, 04 Jul 2024 08:49:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sPLtN-0004BT-JS for qemu-devel@nongnu.org; Thu, 04 Jul 2024 08:48:55 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sPLtH-0006Ng-Tp for qemu-devel@nongnu.org; Thu, 04 Jul 2024 08:48:53 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1720097327; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=b14Iq179KB9r4vFMn7lJuT4Zw90NLVWbiSbt+SfClCw=; b=OQyEkmVqGUvN+DU7NOM/pc3Ga/OgXHBi8jsJuzFjpMA5VGXWWG1IX5TR+t3xW3FSIlgExr 5T0ItiWuxHkWzt0POxcSfXp2c3ZF5dP4BtGmJsbug1YgYo8X7hCzlbTtwI0XeBJoJGTedR t17DxmhPet0SPCs/j2rKIU46GWWkXXw= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-630-it3F5MypMjamiy68QoWcgQ-1; Thu, 04 Jul 2024 08:48:44 -0400 X-MC-Unique: it3F5MypMjamiy68QoWcgQ-1 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 1D0821955F0D; Thu, 4 Jul 2024 12:48:43 +0000 (UTC) Received: from lenovo-t14s.redhat.com (unknown [10.39.192.194]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id A5AEE1956046; Thu, 4 Jul 2024 12:48:41 +0000 (UTC) From: Laurent Vivier To: qemu-devel@nongnu.org Cc: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Jason Wang , Laurent Vivier Subject: [PATCH v2 2/4] net: update netdev stream man page with unix socket Date: Thu, 4 Jul 2024 14:48:32 +0200 Message-ID: <20240704124834.81958-3-lvivier@redhat.com> In-Reply-To: <20240704124834.81958-1-lvivier@redhat.com> References: <20240704124834.81958-1-lvivier@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass client-ip=170.10.133.124; envelope-from=lvivier@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, T_SPF_TEMPERROR=0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add the description of "-netdev stream" with a unix domain socket. The code has been added but the man page has not been updated. Include an example how to use "-netdev stream" and "passt" in place of "-netdev user". ("passt" is a non privileged translation proxy between layer-2, like "-netdev stream", and layer-4 on host, like TCP, UDP, ICMP/ICMPv6 echo) Fixes: 13c6be96618c ("net: stream: add unix socket") Signed-off-by: Laurent Vivier --- qemu-options.hx | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/qemu-options.hx b/qemu-options.hx index 2a099731ea0a..ef476b593cd1 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -3393,6 +3393,46 @@ SRST -device virtio-net,netdev=net0,mac=52:54:00:12:34:57 \\ -netdev stream,id=net0,server=off,addr.type=inet,addr.host=localhost,addr.port=1234 +``-netdev stream,id=str[,server=on|off],addr.type=unix,addr.path=path[,abstract=on|off][,tight=on|off]`` + Configure a network backend to connect to another QEMU virtual machine or a proxy using a stream oriented unix domain socket. + + ``server=on|off`` + if ``on`` create a server socket + + ``addr.path=path`` + filesystem path to use + + ``abstract=on|off`` + if ``on``, this is a Linux abstract socket address. + + ``tight=on|off`` + if false, pad an abstract socket address with enough null bytes to make it fill struct sockaddr_un member sun_path. + + Example (using passt as a replacement of -netdev user): + + .. parsed-literal:: + + # start passt server as a non privileged user + passt + UNIX domain socket bound at /tmp/passt_1.socket + # start QEMU to connect to passt + |qemu_system| linux.img \\ + -device virtio-net,netdev=net0 \\ + -netdev stream,id=net0,server=off,addr.type=unix,addr.path=/tmp/passt_1.socket + + Example (two guests connected using a stream oriented unix domain socket): + + .. parsed-literal:: + + # first VM + |qemu_system| linux.img \\ + -device virtio-net,netdev=net0,mac=52:54:00:12:34:56 \\ + netdev stream,id=net0,server=on,addr.type=unix,addr.path=/tmp/qemu0 + # second VM + |qemu_system| linux.img \\ + -device virtio-net,netdev=net0,mac=52:54:00:12:34:57 \\ + -netdev stream,id=net0,server=off,addr.type=unix,addr.path=/tmp/qemu0 + ``-netdev stream,id=str[,server=on|off],addr.type=fd,addr.str=file-descriptor`` Configure a network backend to connect to another QEMU virtual machine or a proxy using a stream oriented socket file descriptor.