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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= X-MC-Unique: it3F5MypMjamiy68QoWcgQ-1 From: Laurent Vivier To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , 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 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1720097457276100005 Content-Type: text/plain; charset="utf-8" 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=3Dnet0,mac=3D52:54:00:12:3= 4:57 \\ -netdev stream,id=3Dnet0,server=3Doff,addr.type=3Din= et,addr.host=3Dlocalhost,addr.port=3D1234 =20 +``-netdev stream,id=3Dstr[,server=3Don|off],addr.type=3Dunix,addr.path=3Dp= ath[,abstract=3Don|off][,tight=3Don|off]`` + Configure a network backend to connect to another QEMU virtual machine= or a proxy using a stream oriented unix domain socket. + + ``server=3Don|off`` + if ``on`` create a server socket + + ``addr.path=3Dpath`` + filesystem path to use + + ``abstract=3Don|off`` + if ``on``, this is a Linux abstract socket address. + + ``tight=3Don|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=3Dnet0 \\ + -netdev stream,id=3Dnet0,server=3Doff,addr.type=3Dun= ix,addr.path=3D/tmp/passt_1.socket + + Example (two guests connected using a stream oriented unix domain sock= et): + + .. parsed-literal:: + + # first VM + |qemu_system| linux.img \\ + -device virtio-net,netdev=3Dnet0,mac=3D52:54:00:12:3= 4:56 \\ + netdev stream,id=3Dnet0,server=3Don,addr.type=3Dunix= ,addr.path=3D/tmp/qemu0 + # second VM + |qemu_system| linux.img \\ + -device virtio-net,netdev=3Dnet0,mac=3D52:54:00:12:3= 4:57 \\ + -netdev stream,id=3Dnet0,server=3Doff,addr.type=3Dun= ix,addr.path=3D/tmp/qemu0 + ``-netdev stream,id=3Dstr[,server=3Don|off],addr.type=3Dfd,addr.str=3Dfile= -descriptor`` Configure a network backend to connect to another QEMU virtual machine= or a proxy using a stream oriented socket file descriptor. =20 --=20 2.45.2