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 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 81B2EC43334 for ; Fri, 24 Jun 2022 09:42:47 +0000 (UTC) Received: from localhost ([::1]:55444 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o4fpu-0007hO-72 for qemu-devel@archiver.kernel.org; Fri, 24 Jun 2022 05:42:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:53618) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4fp5-0006hS-7O for qemu-devel@nongnu.org; Fri, 24 Jun 2022 05:41:55 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:22783) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o4fp1-0000D9-4c for qemu-devel@nongnu.org; Fri, 24 Jun 2022 05:41:52 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1656063703; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ksx4XId3GQWbtzz0QtV4pD0p2upZc0OPbY2EnV7RREg=; b=cAxpyQhd3wBeE39d+0XcLF60CtawuYbHNvL3dz0VE8MuowuRJ/B+1VO7q/7PeM8YZzzvqb aGMkoh7iSlIFbegx5p8bjESu9oNvrOX4OjrXzyJlRYybxO3sjclobxe0+zMT0PbUJ5QVeL sdeIllNNuxQkIumXaOJI/HLoYQp0DGM= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-350-dqc6XXZLPLmLk-D0nC40rg-1; Fri, 24 Jun 2022 05:41:41 -0400 X-MC-Unique: dqc6XXZLPLmLk-D0nC40rg-1 Received: from smtp.corp.redhat.com (int-mx09.intmail.prod.int.rdu2.redhat.com [10.11.54.9]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4A0C6801E67 for ; Fri, 24 Jun 2022 09:41:41 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.39.195.112]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 08EBF492CA5; Fri, 24 Jun 2022 09:41:40 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 8172721E690D; Fri, 24 Jun 2022 11:41:39 +0200 (CEST) From: Markus Armbruster To: Laurent Vivier Cc: qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , Jason Wang , Paolo Bonzini , Eric Blake , Daniel P. =?utf-8?Q?Berrang=C3=A9?= , Stefano Brivio Subject: Re: [RFC PATCH v4 04/11] qapi: net: add stream and dgram netdevs References: <20220623155317.675932-1-lvivier@redhat.com> <20220623155317.675932-5-lvivier@redhat.com> Date: Fri, 24 Jun 2022 11:41:39 +0200 In-Reply-To: <20220623155317.675932-5-lvivier@redhat.com> (Laurent Vivier's message of "Thu, 23 Jun 2022 17:53:10 +0200") Message-ID: <87a6a2bdpo.fsf@pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.85 on 10.11.54.9 Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-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" Laurent Vivier writes: > Copied from socket netdev file and modified to use SocketAddress > to be able to introduce new features like unix socket. > > "udp" and "mcast" are squashed into dgram netdev, multicast is detected > according to the IP address type. > "listen" and "connect" modes are managed by stream netdev. An optional > parameter "server" defines the mode (server by default) > > Signed-off-by: Laurent Vivier > Reviewed-by: Stefano Brivio > --- [...] > diff --git a/qapi/net.json b/qapi/net.json > index d6f7cfd4d656..32a9b1a5ac6c 100644 > --- a/qapi/net.json > +++ b/qapi/net.json > @@ -7,6 +7,7 @@ > ## >=20=20 > { 'include': 'common.json' } > +{ 'include': 'sockets.json' } >=20=20 > ## > # @set_link: > @@ -566,6 +567,42 @@ > '*isolated': 'bool' }, > 'if': 'CONFIG_VMNET' } >=20=20 > +## > +# @NetdevStreamOptions: > +# > +# Configuration info for stream socket netdev > +# > +# @addr: socket address to listen on (server=3Dtrue) > +# or connect to (server=3Dfalse) > +# @server: create server socket (default: true) > +# > +# Since: 7.1 > +## > +{ 'struct': 'NetdevStreamOptions', > + 'data': { > + 'addr': 'SocketAddress', > + '*server': 'bool' } } > + > +## > +# @NetdevDgramOptions: > +# > +# Configuration info for datagram socket netdev. > +# > +# @remote: remote address > +# @local: local address > +# > +# The code checks there is at least one of these options and reports an = error > +# if not. If remote address is present and it's a multicast address, loc= al > +# address is optional. Otherwise local address is required and remote ad= dress > +# is optional. I need to make a table to understand this. @remote @local | okay? ----------------------------+-------- absent present | yes multicast absent | yes multicast present | yes not multicast absent | no not multicast present | yes Correct? > +# > +# Since: 7.1 > +## > +{ 'struct': 'NetdevDgramOptions', > + 'data': { > + '*local': 'SocketAddress', > + '*remote': 'SocketAddress' }=C2=A0} > + > ## > # @NetClientDriver: > # > @@ -579,8 +616,9 @@ > # @vmnet-bridged since 7.1 > ## > { 'enum': 'NetClientDriver', > - 'data': [ 'none', 'nic', 'user', 'tap', 'l2tpv3', 'socket', 'vde', > - 'bridge', 'hubport', 'netmap', 'vhost-user', 'vhost-vdpa', > + 'data': [ 'none', 'nic', 'user', 'tap', 'l2tpv3', 'socket', 'stream', > + 'dgram', 'vde', 'bridge', 'hubport', 'netmap', 'vhost-user', > + 'vhost-vdpa', > { 'name': 'vmnet-host', 'if': 'CONFIG_VMNET' }, > { 'name': 'vmnet-shared', 'if': 'CONFIG_VMNET' }, > { 'name': 'vmnet-bridged', 'if': 'CONFIG_VMNET' }] } > @@ -610,6 +648,8 @@ > 'tap': 'NetdevTapOptions', > 'l2tpv3': 'NetdevL2TPv3Options', > 'socket': 'NetdevSocketOptions', > + 'stream': 'NetdevStreamOptions', > + 'dgram': 'NetdevDgramOptions', > 'vde': 'NetdevVdeOptions', > 'bridge': 'NetdevBridgeOptions', > 'hubport': 'NetdevHubPortOptions', > diff --git a/qemu-options.hx b/qemu-options.hx > index 377d22fbd82f..03d58da6f8ed 100644 > --- a/qemu-options.hx > +++ b/qemu-options.hx > @@ -2722,6 +2722,18 @@ DEF("netdev", HAS_ARG, QEMU_OPTION_netdev, > "-netdev socket,id=3Dstr[,fd=3Dh][,udp=3Dhost:port][,localaddr=3Dhos= t:port]\n" > " configure a network backend to connect to another n= etwork\n" > " using an UDP tunnel\n" > + "-netdev stream,id=3Dstr[,server=3Don|off],addr.type=3Dinet,addr.hos= t=3Dhost,addr.port=3Dport\n" > + "-netdev stream,id=3Dstr[,server=3Don|off],addr.type=3Dfd,addr.str= =3Dh\n" > + " configure a network backend to connect to another n= etwork\n" > + " using a socket connection in stream mode.\n" This shows -netdev stream with address types 'inet' and 'fd' only. Are address types 'unix' and and 'vsock' rejected? > + "-netdev dgram,id=3Dstr,remote.type=3Dinet,remote.host=3Dmaddr,remot= e.port=3Dport[,local.type=3Dinet,local.host=3Daddr]\n" > + "-netdev dgram,id=3Dstr,remote.type=3Dinet,remote.host=3Dmaddr,remot= e.port=3Dport[,local.type=3Dfd,local.str=3Dh]\n" > + " configure a network backend to connect to a multica= st maddr and port\n" > + " use 'local.host=3Daddr' to specify the host address= to send packets from\n" I think we use ``local.host=3Daddr`` markup. Since this part is about multicast, only remote.type=3Dinet makes sense (other types can't be multicast). Are local address types 'unix' and 'vsock' rejected? > + "-netdev dgram,id=3Dstr,local.type=3Dinet,local.host=3Dhost,local.po= rt=3Dport[,remote.type=3Dinet,remote.host=3Dhost,remote.port=3Dport]\n" > + "-netdev dgram,id=3Dstr,local.type=3Dfd,local.str=3Dh\n" > + " configure a network backend to connect to another n= etwork\n" > + " using an UDP tunnel\n" Is this unicast only? Are other combinations of local.type and remote.type rejected? > #ifdef CONFIG_VDE > "-netdev vde,id=3Dstr[,sock=3Dsocketpath][,port=3Dn][,group=3Dgroupn= ame][,mode=3Doctalmode]\n" > " configure a network backend to connect to port 'n' = of a vde switch\n"