From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from PH8PR06CU001.outbound.protection.outlook.com (mail-westus3azon11012003.outbound.protection.outlook.com [40.107.209.3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B50AF412269; Thu, 2 Jul 2026 08:12:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.209.3 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782979955; cv=fail; b=Ti7IlGBi2UfVysDms+vRffqLhoZ8nUk1NfINHy2GVnWtqti/hMemXiM/NisX7xXs5FxKAhkrKUzAxtlGR8xDtF/zc2BEZUn9OeoZT0XqqGu52oZtUM+AaCnggrLTQoDe576AJBFSUmHHcUOf/hzDuObnPzQSkCRIpoTlekVFUO0= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782979955; c=relaxed/simple; bh=L02+5G1PvUJCwJokOIda/qhg/1cvJB+3xI9Wx6q4UDI=; h=Date:From:To:Cc:Subject:Message-ID:References:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=YnH4MqcfxH2PokJIJaLYR8OJLZG8oozd/nSmJJU+RlyKc2O+lyJcDnpfnzCB4hsw/9gM8ThZIbVhYuR1sIliqWUwScwGDgUAg9ya8tMqdx8+x90GLQ1K6n19L8ZyXSpMkadNN8XAWUlX24jT8JRu6f1+d9tuVknrCZk0TmelfYo= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=Zu16EyJ6; arc=fail smtp.client-ip=40.107.209.3 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="Zu16EyJ6" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=tTcwadpT3Od+KFbU4wRJxVEgmnzncm1Kx3EHVpT8CtwHxiVaYbSVXReIlEfEnDn/BzxnNHTzrXblyPS7uyzIaAiA/+KhFCRlGoF1aTMb9MpswoqY/+EaADQ6cMdNwOR3ZQHr6MX8LU8Mcf9NCgu6Drp6qOglgKtBnYMLzO1dG5TMYHuA46HhymkqMgfvDgAn5PPC45hgYF2/2CaXZUsHf5hyhMnz64z3od6OjGIyrxKivgTz8DtD94IwVM/JnS30FPEe1ZeSfw5i/E3Oj4Df8Jl5vTcJXo9L83BfxzH5YGbJfa2cuFEeeb1EuE8AcV72dBT7ze0dtq2J4M6kYqiDgQ== 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=uhY0waaxDWzDgxXwPRnhHtzMu8t+q8zwtA7spP7KSvw=; b=LDRk1/qDSRRyFYQNdakmiXYS4Gv8U0FYb3klxnfQbP1eXJN6I/sLG5rgPD4Z2khjTYbPuOm/nmR2SgpaNAaSE498pn+wY/LqhoVQAiy1b8E94W5fm1ZL/qCcw1f05je/e9OzW7DtDC5L1i6ouRZplr7uWRpcqdiyP0Ot4KWu20fcyaHga15cKxa1wmyZTDxwHKurDdoi6nMzQzHPstS5vbG8Wpkjznow3Y9Tpa5S+doe1oh5XXAs71b2E4FI9P2MPjvSG1W2aMH9tSMlHypWZHFI88ikvY6CUulajt5KMykTB0B5ZMl/ph5d6ndduBB8su0gC7ZYxsiE5Vdo0PFhHg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=uhY0waaxDWzDgxXwPRnhHtzMu8t+q8zwtA7spP7KSvw=; b=Zu16EyJ6PB0Na87Ir3pU+X7SHrU9y8K91iFqzMJJvUMQk9zwjtft2QCRZaiMlJ8e5RqNZTHYurOty8SWPQAwZ16yxPOvcpGRVZOVFe+awLXjlQTtdUh4oShNaYlbyMk9UPPQ9sTyK5loiuZ54YxexFa5o4z8T2g9m6MtrcEggMb3a5vGXAAuSUhEm+pFDs3epQ1SfOZZXfj83+i2H4yqbffO0rHeC7s/FMN4+6v/z9zA3co6XhWo/ZFBtCZMASsZS62MC8zKcUP2cH3/stUB0KB0RGUMOTsQfSIFvntwUrBIAyqBBBTJOpX4Fm4tIxRDenQsrjpiLpEuHWCIBhKdPg== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from SA3PR12MB7901.namprd12.prod.outlook.com (2603:10b6:806:306::12) by PH0PR12MB7485.namprd12.prod.outlook.com (2603:10b6:510:1e9::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.181.10; Thu, 2 Jul 2026 08:12:31 +0000 Received: from SA3PR12MB7901.namprd12.prod.outlook.com ([fe80::6f7f:5844:f0f7:acc2]) by SA3PR12MB7901.namprd12.prod.outlook.com ([fe80::6f7f:5844:f0f7:acc2%6]) with mapi id 15.21.0181.009; Thu, 2 Jul 2026 08:12:31 +0000 Date: Thu, 2 Jul 2026 11:12:21 +0300 From: Ido Schimmel To: Yuyang Huang Cc: "David S. Miller" , Andrew Lunn , David Ahern , Donald Hunter , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , Simon Horman , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH net-next 2/3] net: ipv6: report multicast group user count Message-ID: <20260702081221.GB1574313@shredder> References: <20260630110207.37841-1-sigefriedhyy@gmail.com> <20260630110207.37841-3-sigefriedhyy@gmail.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260630110207.37841-3-sigefriedhyy@gmail.com> X-ClientProxiedBy: FR5P281CA0034.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:f3::13) To SA3PR12MB7901.namprd12.prod.outlook.com (2603:10b6:806:306::12) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA3PR12MB7901:EE_|PH0PR12MB7485:EE_ X-MS-Office365-Filtering-Correlation-Id: efbc0ac4-0436-470a-961e-08ded811aa40 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|7416014|376014|1800799024|366016|6133799003|56012099006|11063799006|4143699003|22082099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SA3PR12MB7901.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(23010399003)(7416014)(376014)(1800799024)(366016)(6133799003)(56012099006)(11063799006)(4143699003)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?7GXB5Ym6HKoWZXaExw4dsV8MPJRa7mnbllND/xZZ+8v0EljZWVI/KOHQ4Cn1?= =?us-ascii?Q?CAcWnmyphy3hQU5UvMk5q5xQvjqWKQ/5nGu8PJv1X0G3HOee1MKMXTCo+qa0?= =?us-ascii?Q?0gF5HFc4X0BUED3X5vQ1cIV5tyQR4ZLgjuvRCK+ahHPQ0Lv8WZUGpueeGZo7?= =?us-ascii?Q?GzJZxDZVoElHW1YBKXFJIn6REZiwRPIrmH5MG0qKt8gWT9ZPqHxRMfblyBjp?= =?us-ascii?Q?Hi5TWfJKJs6oje0sN/gzw+B3sA7egCxlrAxABDTRb/kUuF0ZOOWAWojLSMEq?= =?us-ascii?Q?mxNthIO4bQyZ2RfxE3x8YXHNPjnxX7m5+tEyB5MCybimsWSkquHVvxUmW8VB?= =?us-ascii?Q?SgiUUwP1C/Ilcw/26Rhn2BpL5f76Vv174QPNMm/DqRQ5pS2wQxmWvps1nzod?= =?us-ascii?Q?ap004xFF8cVVx7TRkljNewSTQ8pWvKC6DtIQ++GkWd6+WYp1S+cRNp5i8Zvo?= =?us-ascii?Q?zU7Bug72C3bQwNpjfvGcyqwJPp+G3hbowYxDyKJylDVPi2Bs/D2+2GgdUxHO?= =?us-ascii?Q?8KLXkyyxR8+0nXLpRrBC7kNmengXmmiac6zjAn5FzkeB/lzU5FmCVYO4Qaos?= =?us-ascii?Q?fMK4t/vPAQdkD0u/EDNAMnaoLdzHTeZaEbD4LlnuqXUQqQE55ZuOVe3fja6a?= =?us-ascii?Q?mYJAKuw0va5TkLVpG8dNX2Tv6MsVyT0H+lGEqD2fXU5J3pUeuTXL77TcQbYu?= =?us-ascii?Q?XS9Fz4VznHpg+t5W7+8EdDwifeOZKUu4OAKVxikHS/XY5BxCD53MFPoJIQje?= =?us-ascii?Q?C1iz4KkuFMrUg4h9dQgysMvqaRsy4gJk6GlBiEkeNVbxgh3T9wD/tz4OdeT+?= =?us-ascii?Q?xxE1GBMTb75jkH/KLuUOyF33E3Uj8SWMI4NeQhO6d7MigDnWvvvdgazlAksG?= =?us-ascii?Q?t8lHIbPyq3mSTxAu1GAUjzslBsKkelZ6I0jCV6G3bejMAzueQwz8dVMmE6VZ?= =?us-ascii?Q?w1sI0Q5ryIXklVUTiyDsdwO4WxExiEcu7u7iDhPhrf66zvYaiz9Q2sBw01R7?= =?us-ascii?Q?abAYtSDHpe0xyD3VqPB8eAQlqGZdGOzCevpnVghLXaD4dqO4tx6P18aq11S4?= =?us-ascii?Q?EEZHJGnt67xGttply+/nLSVKAWIP7yYUMLEJgv5OxRVrMq2AE7zE26Lr06ok?= =?us-ascii?Q?r+aNefQH5m2ZNS1BPqfUvDvxHXsFQwjt0FXmMiwqEN0EVc9KCSRpO4WIAF5A?= =?us-ascii?Q?vLItHxDgySw5mu3fsVewgB4/CDLfhdKf2KEOqnl/yqQLJWwvIM8bsb+d/XrS?= =?us-ascii?Q?mDebycPVc9QQxNqwGCZflgy8wbSPsatvhU7OSU1u6QV5gZ+pFLhO9hVIGjr9?= =?us-ascii?Q?TBf8KhPh0e6fPvJZnRNoCmDFm0wvW4X3gxL0M8mpQaz9IHI34vj1ey7Ou3P1?= =?us-ascii?Q?4jAmFw6GPsCroTqk5GNQdBq08oTSK0R55jQ2cTDeSzrIljzh1d7rYa3c/o3Q?= =?us-ascii?Q?VQfjRAKoGTmy/wupGJ/fo6/l/vcbKiQYo7Xnx5D9l/ReL7aGQThKFU+WVt3F?= =?us-ascii?Q?iBAj7K4E6a3crsNUZADk60SSZ01Y4ml4sZXS6Rc3hl50sBcaO+CS3rnNA34D?= =?us-ascii?Q?2iE/kACjx4yXMGklQbWYi4V0vXQT7nD8Et97rRjFA+epMamtGy4WJtiKgb45?= =?us-ascii?Q?HMeUGrHMt0eUmtNnyeBJqZmPm3XMIDps1H1fPBsz9Kz5MlK46rEyEl+oxICC?= =?us-ascii?Q?dkq2e/iQ5axnaXuDtwowZPrjmqeAMD+k6Hs7iSSFEp3z5urCcA7nPb4Q6/Qj?= =?us-ascii?Q?c7LBjLb2mg=3D=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: efbc0ac4-0436-470a-961e-08ded811aa40 X-MS-Exchange-CrossTenant-AuthSource: SA3PR12MB7901.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Jul 2026 08:12:31.7350 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 7Wgg6W26hdEFAb6Ua8PoIm1GwKJpiScdw+uU1UMqocflMZGqQqoBl69I+FS7OGy0O9MPL96k3yLY6SEyeZC/4Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB7485 On Tue, Jun 30, 2026 at 08:02:06PM +0900, Yuyang Huang wrote: > The previous patch added IFA_MC_USERS and emits it for IPv4 multicast > groups. Add the same snapshot attribute to IPv6 RTM_GETMULTICAST > replies and entry-lifecycle notifications, carrying > ifmcaddr6::mca_users. > > This makes the multicast rtnetlink ABI symmetric across IPv4 and IPv6 > and gives userspace the same user count that /proc/net/igmp6 exposes. > > Signed-off-by: Yuyang Huang Reviewed-by: Ido Schimmel