From nobody Sat Nov 15 15:29:41 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=nutanix.com); dmarc=pass(p=none dis=none) header.from=nutanix.com ARC-Seal: i=2; a=rsa-sha256; t=1750879969; cv=pass; d=zohomail.com; s=zohoarc; b=GfpBvmB2CPjmIBiUbV1Tk+VkktMscymvzSmCfw92yu20Gur+i5ncqvteVhDNMffj1WYl0C0DeWp7aqQaROyBW1wY/z1y4QXRM3RmRnhpHTzu3gxNzjqaUxVGrn1P4Is3Bm7RSU44/FhNhK1cO9HrKMnsRexxP0CBKhjdKlFeYSE= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1750879969; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=N4EobuCCtWRuZK8PlH1YWzQe+7zofV6zf3JMiBNLN9Y=; b=fBkvjPTeH2LHuxfJnMvtsRxYzae5Am8Y1Ej5dwb59Ftfmg5jIHpETYxOj62ajFVvJoAgKnk66z5aGjx0AnlIfgjY2ksFiYDyX/UCoUuC6alg0A8EGggui1n30TU63fPCnw3kHSzL/ADDYL4YuYmrBuZ981E1Wsosa3EpND9ivqs= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=nutanix.com); dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1750879969593830.5839301384145; Wed, 25 Jun 2025 12:32:49 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uUVpH-0007zO-Ga; Wed, 25 Jun 2025 15:30:31 -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 1uUVpG-0007zG-G3 for qemu-devel@nongnu.org; Wed, 25 Jun 2025 15:30:30 -0400 Received: from mx0b-002c1b01.pphosted.com ([148.163.155.12]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1uUVpC-0003Gn-RA for qemu-devel@nongnu.org; Wed, 25 Jun 2025 15:30:30 -0400 Received: from pps.filterd (m0127842.ppops.net [127.0.0.1]) by mx0b-002c1b01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 55PHZeal021791; Wed, 25 Jun 2025 12:30:25 -0700 Received: from nam04-mw2-obe.outbound.protection.outlook.com (mail-mw2nam04on2099.outbound.protection.outlook.com [40.107.101.99]) by mx0b-002c1b01.pphosted.com (PPS) with ESMTPS id 47geghhf7u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 25 Jun 2025 12:30:24 -0700 (PDT) Received: from CH2PR02MB6760.namprd02.prod.outlook.com (2603:10b6:610:7f::9) by PH0PR02MB8535.namprd02.prod.outlook.com (2603:10b6:510:dd::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8857.28; Wed, 25 Jun 2025 19:30:22 +0000 Received: from CH2PR02MB6760.namprd02.prod.outlook.com ([fe80::fd77:ea65:a159:ef51]) by CH2PR02MB6760.namprd02.prod.outlook.com ([fe80::fd77:ea65:a159:ef51%2]) with mapi id 15.20.8880.015; Wed, 25 Jun 2025 19:30:22 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nutanix.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= proofpoint20171006; bh=N4EobuCCtWRuZK8PlH1YWzQe+7zofV6zf3JMiBNLN 9Y=; b=s1DJYa2DDWCdPdg451S8fDU8CRq/PIvT8mFZBoD7HQVLTGW7ThA0f2wx6 evRyxOrieCG9qvxLZAWB12TLOnGd+8IN4sp180lS+ClPlYSWAU9TPw5EPoS1gYmb Cvqrzc+QcvDAh0/k+ehKydXktJVyRKtVMxHVo9v9+3hIbtoNnKkvVvInXi//69TW 6h/dpWnhu7u3+kWnVMdQNVmW7nE1r/2eBpgVpC0nwp0+p6zVnUrTxaBKw4BLnc1J X8/zRD+G2L2RD+IjRCruV7QZq7eFNSXGQOnaWlZOVgPt0TXrcIdAnE3Ze3pdYtMw f5WzUxAZ1fHCSBBizFrGiQ0XxPBKA== ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=bpkCWuUILwzDac6FiCBJt85NICz3YlKbBGKuRPRNQmL0BpY+TXVcb5M4j7oyIG3YD38KNJCu5gioXwQFy3Z01F5rOCfHuqafJU49AEGGlP1vdEKBLov5xAcYFEXL87mEyY2wHay61A8nFIQF6YYGT3928+VkLnekU+RK+3RlyQi/nzpndwIsN+McEyQETkM6BdsagPFd0+QyFKa04ifYY4zyVScfzmXB1qKp22/4RIJZ1QOS6bIqxYkXPDiwl0uccJ+z8Buz0iuLRNiYpbScHU6NWfqpVs2vNjoTCsamrYfJmO9PzcoCo3ZMy3MqLxaiU2o9wqkXXtPQva6VwkeYPg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=N4EobuCCtWRuZK8PlH1YWzQe+7zofV6zf3JMiBNLN9Y=; b=CfEbh96WOo1jXyGKmBnLxuQ5Tp4IikQrJz5sDzmauyKSzV0vFCx3vrX/GyrlLSmk89HgvvEKXz8asCY8HilQ4kTCvCrVZfI6y3nAYeWySSBk/AOa/vtCzhoBZmOhgbvwTdVkB7up2Jl46jyYGGsCexfod81g2wx5RRI4GdFh34mqA4P0A4l+c3vJAe29lFPMz43iUily8v8BkU988bjlQ/ovlRUosKHEwQcMQ+IPFZUu5mLuupfGlHGjPJoK2E7KHXYrK6gaa/cqbhE+oIZSRywUUQDWp1Nkz1/UzbFNUwIDXk37L6QDDWgKHiUeUlHRWRTyDoOxDrbwEL9CD+G1xw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nutanix.com; dmarc=pass action=none header.from=nutanix.com; dkim=pass header.d=nutanix.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nutanix.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=N4EobuCCtWRuZK8PlH1YWzQe+7zofV6zf3JMiBNLN9Y=; b=Nq01H6/gos/2TE0lxGO1b7iYYZj1il1/FLNDB+oISAc9/Lbl3MZUXEL8gxLIQNg1v5FC6MH4q/sbB6lEruyz8r8ybvMyGRzON0pWvQWkiYvVze60Xb2zkGTPzXvWfXjf9Tsu/9osbpW1E4PPDtnuj9I4fo7QWcgFPq/7iHY3Db2ZSM/NLxYWgedOa9kHhWIrh7D4VATOXKEyrxOuXX/21n7Kc93/W8uxSkXj6Tk0sT8f4AdczEVjuqoI3GlZzsom58N/OAL0YM0F1s8K2un9FwdatMwh8kf8BBDTw7rVKCJrXFED4pK4BpzWEB8rWL7j71utbsqvUCsrTC49zf9YmA== From: John Levon To: qemu-devel@nongnu.org Cc: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , John Levon , Thanos Makatos , Paolo Bonzini , Alex Williamson , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , John Johnson , Elena Ufimtseva , Jagannathan Raman Subject: [PATCH v5 02/19] vfio-user: connect vfio proxy to remote server Date: Wed, 25 Jun 2025 20:29:54 +0100 Message-ID: <20250625193012.2316242-3-john.levon@nutanix.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250625193012.2316242-1-john.levon@nutanix.com> References: <20250625193012.2316242-1-john.levon@nutanix.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AS4P190CA0019.EURP190.PROD.OUTLOOK.COM (2603:10a6:20b:5d0::18) To CH2PR02MB6760.namprd02.prod.outlook.com (2603:10b6:610:7f::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PR02MB6760:EE_|PH0PR02MB8535:EE_ X-MS-Office365-Filtering-Correlation-Id: bc576bfe-e256-40b4-4859-08ddb41eba4e x-proofpoint-crosstenant: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|366016|1800799024; X-Microsoft-Antispam-Message-Info: =?utf-8?B?MEpodlRpbDJpdWFNNlRqc0dMcUZjMTAvdGtrWlREQmI1YW9LUTMxS1pWZVdR?= =?utf-8?B?VlJXbFlrR2lvWC9YaGRsdURyYnhNSzBDVG1WOGNnVjVLQkxRZ1dQZGhvYWxr?= =?utf-8?B?M3lsWE56aTBFekg5MTZwN0NhdGRHd2hFUW9nMW1iM0dWTExOZE4zMlFGbS9O?= =?utf-8?B?TktZS1crUElLRWZVTlZ1MDA4MDRmeXlkRGZpdG1waXQvaDd3TFJTS0swUU40?= =?utf-8?B?alQyaHlRME5iL3BCcXZiV0MraUJtbWFNa3psLzVRaCtXOWQ2aFlWdzhYK2JP?= =?utf-8?B?WU42QzdCbUVhcG5YbGk5SmpxVEhQNmpHWVhTbnA1aHFkU2pYN2x0c1IzTXRX?= =?utf-8?B?WWJhTThYc0xSa0ZJMVZVZFBvSERjVHNYK1B0RjFSZ0EwaXFNTWtxbHdKQmow?= =?utf-8?B?bUk0VVRFcEIzd2wyaWliTE1EeXNZNVhTZ3VKTHEzOTlSSThpSjgvZDBESHYr?= =?utf-8?B?SmRlQUw1Ty90ZXJ0THBJVkxMQU1zNlk1cm4yV0U3TWt1bDhDRUl4M3NWRVRT?= =?utf-8?B?UDZjR0RMYVBrU21MWlhVYjB6NDUxT1hzZGJacnc1c0J0QVI3SHRwRnlxb3lG?= =?utf-8?B?c213MHlGSHA0cGRia2t1TDZsWmxYeC9heFFGMWpkcGdQWk56cEpHUHdBemFC?= =?utf-8?B?YUJBd0dCeXRKTnRsM0JlS3ZWQnk1dGVYcS80Y1VmTVR1ODF3d2hrN2pRcjhu?= =?utf-8?B?a2tKam1DSWk4YVhJNTMzZFBrMHB3S2ZEWEpsNWpjSG5sRTBZQ21EbmFGV21Y?= =?utf-8?B?aVZwMmt3MEtFMHZGaUpFQjJ6MkwvMktTbmg5SlJraTFLRE9rcGpJRFovZUV2?= =?utf-8?B?OENXVmMzRzQ0c2FwYVpvYVhqbjdjdXNxLytYWE1YTXhFZ3VrMXBQTDNGVmtp?= =?utf-8?B?VzVpQWJsZmxBQngwWkkyL1ZmSWZtRkpsYmNpTXY1aWFzbFZaM1g4Nzh2Qjll?= =?utf-8?B?RUNKOERteUlWTFhzMURPeURya3pMMXNZb0loUURkNEd4NHBUZEVIYTBCMFEr?= =?utf-8?B?K2lYUWxXZVhhcEc2bXRCd1FqUmVVelEzVHRvNllMcUtVNDQ0bmwrcTlCSlFU?= =?utf-8?B?Rkwxa3U0RjBlWTdGaUxFNElaWkhnQmdBb2M4SjZaSGtUK2tEY2tBNFNQbm9H?= =?utf-8?B?NjRiU1JFZ1hiSkg3VVQ0dE5rS0xKZUJ2Sk8wUE5pVTVHVWV1bGNCa1lJS3Ey?= =?utf-8?B?Sk1VbXNldWJDczUzZE95TGQrRkdrVFYwSlVBOWxWb1RVVXBnMmhyWEJ6aUh5?= =?utf-8?B?WTRuSnhLSFJzQVhGVVBVSlRpY1hKYUVObEVPZGJsc3gxTzlTZlEyb0R6NmE5?= =?utf-8?B?U3kxdjBnRitjUWpmZmQzTmdWM0F0SzdyVFRQdjh5T0NTR09ZV3BZMENmaUxO?= =?utf-8?B?V21Pa0NQbEpNdGdFM0l4NGF5MGM4b1FmTlRSWDA5Zmxqd20wRUNPU0Vhd3Rk?= =?utf-8?B?ZkhGSDI5dHdabFBzcnF3cG4vVnJUYlNMVUFvRUdiWjZpYy83cFZ3amlHWXRz?= =?utf-8?B?RWhuUDZsSFRGOWw3YVBKWWNBTTVwRWRxSGRMMkZ3REJ3UXBHc2xHMzBoVSt3?= =?utf-8?B?YTZEK09LTjlRZlE4Z2JVQ3crNGJKUEVlNjRRVVlKK0R5NTYzNGtvc1ZBUk5o?= =?utf-8?B?UHhic3J1WmcwWHRMZHhPUGxxS3kvOHhlbVU3cFdVNithZUJYNFlOWVZXZHZT?= =?utf-8?B?MDhPaTQzeHpiNy9ta3h6OUxSY3pOeDJUYkJzcnQzY1F6RUVUSGpxN1NvTlc1?= =?utf-8?B?QWNVNFF2dWRFd0hrUnoxTTErZUJmM2lpL2toZXBwdk9xcUljL3lXQ2RmUGZk?= =?utf-8?B?U0pGbUU3YlZqUVppdUU5Wmdxb1NuZDlrR1RUcmRKdXE0TFRLN2dTdlNNRVhn?= =?utf-8?B?Uy9yTXNWU3JHS0tnYk54elc5SEttQjUxUDFuajNXS1lkUjNQajF6SC9hRjZX?= =?utf-8?Q?UCfQO/L4lp0=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:CH2PR02MB6760.namprd02.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230040)(7416014)(376014)(366016)(1800799024); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?K2w3dkJkMTUrOHkyeFczdTgvSGNrZXU2bnR0N05uRGl1TjRvSStjN2tMbzRq?= =?utf-8?B?cFJocVF3VjA3blFMeXhKeHFiNWRWKzhxYTFTTTZXK3hqWXdVSVpsTjN2d3Yw?= =?utf-8?B?bEQ0RHp0N1hSZDE0eUJ3cU0rcnRtMmx4cEYwZUVURVJVYkxKWStUOVFJRHEr?= =?utf-8?B?bTNpQU1DQ0pEUHQvekJWbGtvbldTMU9HZXlSb3I2ZkEwdytnMTdSbm5lRmVE?= =?utf-8?B?aVZrWk1NeGkxTHcyVnJkeEYrYVlqMThwOEhwRWJ6VTFmSWVRclF5cFEzcmNW?= =?utf-8?B?MVRlWGNsYTN2THo1VDJzbFBzTllUUjJueEREeGxmM3puNTNZVmtKbXFsbjhV?= =?utf-8?B?cW1mRlRqb0orOXZmTkxKNlBITElwKzdjeXNNK0VMR0FUdENGMTdaSnU5cjFx?= =?utf-8?B?Z3RpdkpOMDZ1Ly9TS3lzbHlkSFVRQVAyOU5RRnE3SHg0Y3diNGdWQVJCNDZN?= =?utf-8?B?U3g4enBLU1E3R0tDMnBZYTQydTNkK0h1R3VKakg4bzNkcFJ4Z3I3RkdqYWdV?= =?utf-8?B?a2hmelp4UXB0LzFiT21EUWZMU3FUOFl0Rktoa28rUHZCakxBZE5MbHYrVjh3?= =?utf-8?B?ZmhjY0RualpLYmZpeXEzUm9iM25TQlRoVXVZdUNxMDdpM0YzUmVrZ0pzcEM2?= =?utf-8?B?WFlCcnloOEZHYWV2MitiZ2NCMTRnRVYvQ243eXNaSGx4RlNYVUQxYW1PY2VX?= =?utf-8?B?NXRTc1ZjcTBWTmlkWEVFWlYvYVQ3blNnNnhXb29yeFhDV0tLTXVqZnhyUkxV?= =?utf-8?B?bm5hMVlDQ2NtbnV3YTZwNnZOblVHNHJzdExNdlZoUnpWQ2JJOE41KzRzTWVY?= =?utf-8?B?QU54TG5iL1V4bnhpSzdva3ZtbFY4TmRwcjhXUVlpeGQzSFk5NVZ0elo3OHVa?= =?utf-8?B?OS9aeG5GU2RHZWZpbjgydHZhdzJ0RXVIN1RnMWg2QlA4QThJR0ZwRldPdkxk?= =?utf-8?B?cVlmdVVBK2RPQ1BnMFpVQ0IxTzY2V1owSWJhQi9tcDRSOHhEc2lTZHJLYWty?= =?utf-8?B?S1ppeUpBMk1yd3lOMkRXclg5dnpzQUZqNlBTNjlRbTRaSndQRDEzMGVLZ29U?= =?utf-8?B?eHJxbENUcmN4R2RQMkhJWW1qMFlvc2RpSGN2bTFZTEIxdnhVcEx3REQrV2JD?= =?utf-8?B?RDN0cTBLUmNCYk1MWGVHREdSMStTYmxRL2crT2hUUmU4SytWSnNueldHMDhq?= =?utf-8?B?QzY4b3NCcEY5VEh6YlVsZTFQRHZFays3MUZ6L1VMb2lzb3NFU0VRalJOeURn?= =?utf-8?B?a0Rkbk5IOU40aU1SYjhmdE9JRHRhNTRnZVNXMElDK3pOWC9oUFNmUTlNRGc4?= =?utf-8?B?NDBVTlVvNHI2a2I3c1gyOXdXSHJlM3g5b2lIcGw0K3o5YyttTW1TNjZ3bjZY?= =?utf-8?B?UFZnT3ZycjRYeGF1ZjZQUDBtcVZDU2R6MDhSVWJuL2JseWpHOU56YWt4Q3pw?= =?utf-8?B?VWkvRWQ4RVRHTS9Kd21pNFZFbWlWUzNFcE8veVVTUmpEdlpBVkwzOE1nNEtF?= =?utf-8?B?cVVTbk5PSTJNb0FheFhNUWpsYUFSakhQVCtrNUkyUSsxdHVXSlAwdC9xZjFY?= =?utf-8?B?TTV0OHJuZ0ExRkJySUxBQ1dnWWk0L2QxdEJUblpzdGlhMEZNak5IV0RqVUU2?= =?utf-8?B?L3NIdm5jTkdoRm9lUGRWSStKcFZoc1locDg3VW4wclozSW9Ud25vdS9Lc1hn?= =?utf-8?B?N081RFdHVDduc2FON1hwMmJmYmY1OVZFNHZzaXkvSG5GVmNiZ3FmZ1B2ZXp4?= =?utf-8?B?aTVYMHpvOGFqQ3FINVYzeHVrc0hiYkNuNzBIeDlueDlDSXpia2VWekhIOEpz?= =?utf-8?B?TVB6UlFYVXNnbXRzTG9YRVdEK1JJMzk0VHhpVnYzSUx6VU1OUDNhOVd5Ri9w?= =?utf-8?B?a2MzTWdPU3lvWEZZL0g0QnVHTTVyakEzV1VDQi9yemJ2cjNMNzdubnpNK3Ry?= =?utf-8?B?Z2Vwc0JTSi9wNzlpVGxtaVhIOXdlWUoyWXdXVnZzbThIV3lMdElGandWU1RE?= =?utf-8?B?YkJ6ekF5RnNvMHA0Rnk1ZGExenNMeUM3dUFLVmZvcVpyeDd0R0FhS3hMVitx?= =?utf-8?B?bEVKb3VTTS9KT242SnlWa2N6Vkg3bFVZeG0zZlNFYkR0TlZudHgzWnV0M3FW?= =?utf-8?Q?6j0yqLlMenP5beNPQfiOc4/vK?= X-OriginatorOrg: nutanix.com X-MS-Exchange-CrossTenant-Network-Message-Id: bc576bfe-e256-40b4-4859-08ddb41eba4e X-MS-Exchange-CrossTenant-AuthSource: CH2PR02MB6760.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Jun 2025 19:30:22.7908 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: bb047546-786f-4de1-bd75-24e5b6f79043 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: jiIcBFd4Us7n7Nyj1sj8/X+gK3b8a0bDeMhTh3gnaqY5UfqAt5hamY4xLEWdC52RB0i+yGNX1nqyqwuHeEMLDQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR02MB8535 X-Authority-Analysis: v=2.4 cv=fPo53Yae c=1 sm=1 tr=0 ts=685c4e50 cx=c_pps a=BDhOPDsQvggip5BazaeBNQ==:117 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=6IFa9wvqVegA:10 a=0kUYKlekyDsA:10 a=yPCof4ZbAAAA:8 a=64Cc0HZtAAAA:8 a=Fsi43M_n0QUer9rQu0sA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-ORIG-GUID: NCX869KavWWMU1PznvFB8fPtf2b7zfQg X-Proofpoint-GUID: NCX869KavWWMU1PznvFB8fPtf2b7zfQg X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjI1MDE0NyBTYWx0ZWRfXyr/hSlz19Bm/ TALKAsTUaxhAC+LaOmo2hh0dS/F91KAfXQt2gYuEOQuadwzWr3/XLVqB7lDFqaWqsdQ92+HMf0n wjqDeYfB1O5B3XwZzscfGOLypclWJ6ueQ4uSYLTeIdjCgI0A8zg1wRbQjTNA9MDvt7Zl4TuBNXU HX3ku1pj7KJ7UIREDBre12NJ0Ipfqh4ptw9peS8s6Gmjs1ba5RW9K19V5UuF0DwttxgCMHSXSUB 3PWuYHVy2c68x6KXXHZXZtm2mSFERRrGLbgnQMaBhX+l+0Z8J0Gsbql9kQx0TYbRBNx23EyzpfN 7rNA2wWQ80c8uZGTT6q7yitGFmc9STfsr+UDzd2XFDof6B7AJ82314k7YmYDlev6fNDTP89uMCB 1/pe3+IRE7wKbSx6hvW6/NqUZDSfaey0tTJTjI6mv3F4gZgAn+KVupNJModcvx4b1B48WX96 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-06-25_06,2025-06-25_01,2025-03-28_01 X-Proofpoint-Spam-Reason: safe 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=148.163.155.12; envelope-from=john.levon@nutanix.com; helo=mx0b-002c1b01.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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: 2.1.29 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 @nutanix.com) X-ZM-MESSAGEID: 1750879971334116600 Introduce the vfio-user "proxy": this is the client code responsible for sending and receiving vfio-user messages across the control socket. The new files hw/vfio-user/proxy.[ch] contain some basic plumbing for managing the proxy; initialize the proxy during realization of the VFIOUserPCIDevice instance. Originally-by: John Johnson Signed-off-by: Elena Ufimtseva Signed-off-by: Jagannathan Raman Signed-off-by: John Levon Reviewed-by: C=C3=A9dric Le Goater --- hw/vfio-user/proxy.h | 79 +++++++++++++++++ include/hw/vfio/vfio-device.h | 2 + hw/vfio-user/pci.c | 22 +++++ hw/vfio-user/proxy.c | 162 ++++++++++++++++++++++++++++++++++ hw/vfio-user/meson.build | 1 + 5 files changed, 266 insertions(+) create mode 100644 hw/vfio-user/proxy.h create mode 100644 hw/vfio-user/proxy.c diff --git a/hw/vfio-user/proxy.h b/hw/vfio-user/proxy.h new file mode 100644 index 0000000000..a9bce82239 --- /dev/null +++ b/hw/vfio-user/proxy.h @@ -0,0 +1,79 @@ +#ifndef VFIO_USER_PROXY_H +#define VFIO_USER_PROXY_H + +/* + * vfio protocol over a UNIX socket. + * + * Copyright =C2=A9 2018, 2021 Oracle and/or its affiliates. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "io/channel.h" +#include "io/channel-socket.h" + +typedef struct { + int send_fds; + int recv_fds; + int *fds; +} VFIOUserFDs; + +enum msg_type { + VFIO_MSG_NONE, + VFIO_MSG_ASYNC, + VFIO_MSG_WAIT, + VFIO_MSG_NOWAIT, + VFIO_MSG_REQ, +}; + +typedef struct VFIOUserMsg { + QTAILQ_ENTRY(VFIOUserMsg) next; + VFIOUserFDs *fds; + uint32_t rsize; + uint32_t id; + QemuCond cv; + bool complete; + enum msg_type type; +} VFIOUserMsg; + + +enum proxy_state { + VFIO_PROXY_CONNECTED =3D 1, + VFIO_PROXY_ERROR =3D 2, + VFIO_PROXY_CLOSING =3D 3, + VFIO_PROXY_CLOSED =3D 4, +}; + +typedef QTAILQ_HEAD(VFIOUserMsgQ, VFIOUserMsg) VFIOUserMsgQ; + +typedef struct VFIOUserProxy { + QLIST_ENTRY(VFIOUserProxy) next; + char *sockname; + struct QIOChannel *ioc; + void (*request)(void *opaque, VFIOUserMsg *msg); + void *req_arg; + int flags; + QemuCond close_cv; + AioContext *ctx; + QEMUBH *req_bh; + + /* + * above only changed when BQL is held + * below are protected by per-proxy lock + */ + QemuMutex lock; + VFIOUserMsgQ free; + VFIOUserMsgQ pending; + VFIOUserMsgQ incoming; + VFIOUserMsgQ outgoing; + VFIOUserMsg *last_nowait; + enum proxy_state state; +} VFIOUserProxy; + +/* VFIOProxy flags */ +#define VFIO_PROXY_CLIENT 0x1 + +VFIOUserProxy *vfio_user_connect_dev(SocketAddress *addr, Error **errp); +void vfio_user_disconnect(VFIOUserProxy *proxy); + +#endif /* VFIO_USER_PROXY_H */ diff --git a/include/hw/vfio/vfio-device.h b/include/hw/vfio/vfio-device.h index d45e5a68a2..7c0669de0d 100644 --- a/include/hw/vfio/vfio-device.h +++ b/include/hw/vfio/vfio-device.h @@ -47,6 +47,7 @@ typedef struct VFIOMigration VFIOMigration; =20 typedef struct IOMMUFDBackend IOMMUFDBackend; typedef struct VFIOIOASHwpt VFIOIOASHwpt; +typedef struct VFIOUserProxy VFIOUserProxy; =20 typedef struct VFIODevice { QLIST_ENTRY(VFIODevice) next; @@ -88,6 +89,7 @@ typedef struct VFIODevice { struct vfio_region_info **reginfo; int *region_fds; VFIODeviceCPR cpr; + VFIOUserProxy *proxy; } VFIODevice; =20 struct VFIODeviceOps { diff --git a/hw/vfio-user/pci.c b/hw/vfio-user/pci.c index 86d7055747..642421e791 100644 --- a/hw/vfio-user/pci.c +++ b/hw/vfio-user/pci.c @@ -12,6 +12,7 @@ =20 #include "hw/qdev-properties.h" #include "hw/vfio/pci.h" +#include "hw/vfio-user/proxy.h" =20 #define TYPE_VFIO_USER_PCI "vfio-user-pci" OBJECT_DECLARE_SIMPLE_TYPE(VFIOUserPCIDevice, VFIO_USER_PCI) @@ -54,6 +55,8 @@ static void vfio_user_pci_realize(PCIDevice *pdev, Error = **errp) VFIODevice *vbasedev =3D &vdev->vbasedev; const char *sock_name; AddressSpace *as; + SocketAddress addr; + VFIOUserProxy *proxy; =20 if (!udev->socket) { error_setg(errp, "No socket specified"); @@ -69,6 +72,15 @@ static void vfio_user_pci_realize(PCIDevice *pdev, Error= **errp) =20 vbasedev->name =3D g_strdup_printf("vfio-user:%s", sock_name); =20 + memset(&addr, 0, sizeof(addr)); + addr.type =3D SOCKET_ADDRESS_TYPE_UNIX; + addr.u.q_unix.path =3D (char *)sock_name; + proxy =3D vfio_user_connect_dev(&addr, errp); + if (!proxy) { + return; + } + vbasedev->proxy =3D proxy; + /* * vfio-user devices are effectively mdevs (don't use a host iommu). */ @@ -112,8 +124,13 @@ static void vfio_user_instance_init(Object *obj) static void vfio_user_instance_finalize(Object *obj) { VFIOPCIDevice *vdev =3D VFIO_PCI_BASE(obj); + VFIODevice *vbasedev =3D &vdev->vbasedev; =20 vfio_pci_put_device(vdev); + + if (vbasedev->proxy !=3D NULL) { + vfio_user_disconnect(vbasedev->proxy); + } } =20 static const Property vfio_user_pci_dev_properties[] =3D { @@ -133,6 +150,11 @@ static void vfio_user_pci_set_socket(Object *obj, Visi= tor *v, const char *name, VFIOUserPCIDevice *udev =3D VFIO_USER_PCI(obj); bool success; =20 + if (udev->device.vbasedev.proxy) { + error_setg(errp, "Proxy is connected"); + return; + } + qapi_free_SocketAddress(udev->socket); =20 udev->socket =3D NULL; diff --git a/hw/vfio-user/proxy.c b/hw/vfio-user/proxy.c new file mode 100644 index 0000000000..bb436c9db9 --- /dev/null +++ b/hw/vfio-user/proxy.c @@ -0,0 +1,162 @@ +/* + * vfio protocol over a UNIX socket. + * + * Copyright =C2=A9 2018, 2021 Oracle and/or its affiliates. + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#include "qemu/osdep.h" +#include + +#include "hw/vfio/vfio-device.h" +#include "hw/vfio-user/proxy.h" +#include "qapi/error.h" +#include "qemu/error-report.h" +#include "qemu/lockable.h" +#include "system/iothread.h" + +static IOThread *vfio_user_iothread; + +static void vfio_user_shutdown(VFIOUserProxy *proxy); + + +/* + * Functions called by main, CPU, or iothread threads + */ + +static void vfio_user_shutdown(VFIOUserProxy *proxy) +{ + qio_channel_shutdown(proxy->ioc, QIO_CHANNEL_SHUTDOWN_READ, NULL); + qio_channel_set_aio_fd_handler(proxy->ioc, proxy->ctx, NULL, + proxy->ctx, NULL, NULL); +} + +/* + * Functions only called by iothread + */ + +static void vfio_user_cb(void *opaque) +{ + VFIOUserProxy *proxy =3D opaque; + + QEMU_LOCK_GUARD(&proxy->lock); + + proxy->state =3D VFIO_PROXY_CLOSED; + qemu_cond_signal(&proxy->close_cv); +} + + +/* + * Functions called by main or CPU threads + */ + +static QLIST_HEAD(, VFIOUserProxy) vfio_user_sockets =3D + QLIST_HEAD_INITIALIZER(vfio_user_sockets); + +VFIOUserProxy *vfio_user_connect_dev(SocketAddress *addr, Error **errp) +{ + VFIOUserProxy *proxy; + QIOChannelSocket *sioc; + QIOChannel *ioc; + char *sockname; + + if (addr->type !=3D SOCKET_ADDRESS_TYPE_UNIX) { + error_setg(errp, "vfio_user_connect - bad address family"); + return NULL; + } + sockname =3D addr->u.q_unix.path; + + sioc =3D qio_channel_socket_new(); + ioc =3D QIO_CHANNEL(sioc); + if (qio_channel_socket_connect_sync(sioc, addr, errp)) { + object_unref(OBJECT(ioc)); + return NULL; + } + qio_channel_set_blocking(ioc, false, NULL); + + proxy =3D g_malloc0(sizeof(VFIOUserProxy)); + proxy->sockname =3D g_strdup_printf("unix:%s", sockname); + proxy->ioc =3D ioc; + proxy->flags =3D VFIO_PROXY_CLIENT; + proxy->state =3D VFIO_PROXY_CONNECTED; + + qemu_mutex_init(&proxy->lock); + qemu_cond_init(&proxy->close_cv); + + if (vfio_user_iothread =3D=3D NULL) { + vfio_user_iothread =3D iothread_create("VFIO user", errp); + } + + proxy->ctx =3D iothread_get_aio_context(vfio_user_iothread); + + QTAILQ_INIT(&proxy->outgoing); + QTAILQ_INIT(&proxy->incoming); + QTAILQ_INIT(&proxy->free); + QTAILQ_INIT(&proxy->pending); + QLIST_INSERT_HEAD(&vfio_user_sockets, proxy, next); + + return proxy; +} + +void vfio_user_disconnect(VFIOUserProxy *proxy) +{ + VFIOUserMsg *r1, *r2; + + qemu_mutex_lock(&proxy->lock); + + /* our side is quitting */ + if (proxy->state =3D=3D VFIO_PROXY_CONNECTED) { + vfio_user_shutdown(proxy); + if (!QTAILQ_EMPTY(&proxy->pending)) { + error_printf("vfio_user_disconnect: outstanding requests\n"); + } + } + object_unref(OBJECT(proxy->ioc)); + proxy->ioc =3D NULL; + + proxy->state =3D VFIO_PROXY_CLOSING; + QTAILQ_FOREACH_SAFE(r1, &proxy->outgoing, next, r2) { + qemu_cond_destroy(&r1->cv); + QTAILQ_REMOVE(&proxy->outgoing, r1, next); + g_free(r1); + } + QTAILQ_FOREACH_SAFE(r1, &proxy->incoming, next, r2) { + qemu_cond_destroy(&r1->cv); + QTAILQ_REMOVE(&proxy->incoming, r1, next); + g_free(r1); + } + QTAILQ_FOREACH_SAFE(r1, &proxy->pending, next, r2) { + qemu_cond_destroy(&r1->cv); + QTAILQ_REMOVE(&proxy->pending, r1, next); + g_free(r1); + } + QTAILQ_FOREACH_SAFE(r1, &proxy->free, next, r2) { + qemu_cond_destroy(&r1->cv); + QTAILQ_REMOVE(&proxy->free, r1, next); + g_free(r1); + } + + /* + * Make sure the iothread isn't blocking anywhere + * with a ref to this proxy by waiting for a BH + * handler to run after the proxy fd handlers were + * deleted above. + */ + aio_bh_schedule_oneshot(proxy->ctx, vfio_user_cb, proxy); + qemu_cond_wait(&proxy->close_cv, &proxy->lock); + + /* we now hold the only ref to proxy */ + qemu_mutex_unlock(&proxy->lock); + qemu_cond_destroy(&proxy->close_cv); + qemu_mutex_destroy(&proxy->lock); + + QLIST_REMOVE(proxy, next); + if (QLIST_EMPTY(&vfio_user_sockets)) { + iothread_destroy(vfio_user_iothread); + vfio_user_iothread =3D NULL; + } + + g_free(proxy->sockname); + g_free(proxy); +} diff --git a/hw/vfio-user/meson.build b/hw/vfio-user/meson.build index b82c558252..9e85a8ea51 100644 --- a/hw/vfio-user/meson.build +++ b/hw/vfio-user/meson.build @@ -4,6 +4,7 @@ vfio_user_ss =3D ss.source_set() vfio_user_ss.add(files( 'container.c', 'pci.c', + 'proxy.c', )) =20 system_ss.add_all(when: 'CONFIG_VFIO_USER', if_true: vfio_user_ss) --=20 2.43.0