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Mon, 9 Nov 2026 00:37:47 -0800 Message-ID: Date: Mon, 9 Nov 2026 10:37:44 +0200 X-Mailing-List: netdev@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH rdma-next 06/23] RDMA/mlx5: Require IB_QPT_DRIVER for the DC vendor QP types To: CC: , , , , , , , , , , , , , , References: <20261103163949.1554-7-yishaih@nvidia.com> <179408308744.994134.2975103686531354002@kernel.org> Content-Language: en-US From: Yishai Hadas In-Reply-To: <179408308744.994134.2975103686531354002@kernel.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: rnnvmail203.nvidia.com (10.129.68.9) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY1PEPF000264B4:EE_|SA9PR12MB666623:EE_ X-MS-Office365-Filtering-Correlation-Id: ba2a458f-593f-49c3-2c46-08df3e3cc6a2 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|1800799024|23010399003|82310400026|7416014|376014|4143699003|56012099006|11063799006|261009223027099003|261026121527099003|261021121427099003|261028144727099003|261022105027099003|261102123227099003|261026140227099003|10067099003|22082099003|5023799004|18002099003|6133799003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: JEEJMkzAZxaRGWqcb8WOFM+mORYy3wcH2SItjtuFhXMwz0g/gt9w8TUQ4MJfA8YvQ6jKorU4nf8iTiWEPlCe+cCnn87+eTRaV/dNYPZlq07WD87NKqp5YFytZHnHzJxOeR7tu9R0E0U8WMTHFY2LCGLQZIbLMppOaGHHSJAK87v5/bXoL28ubpEgcXpHWT9dfqCYfWTXhFEdXKtmIXK8H23Dh0xlZM3x+HxdHh8ZMO1IfKQCVs/h4vIg4KIViKonoZIqTuehnv6zBdpvQ2rAz/K2U86Zsj+xqStmCMdrDKrsNrJJrMZZEDllWckwVVQNAhtM0Kn9f79U+Nv5MRnB0QSsIvHWUzBgKpzYZ/qw2B7FGO0IJUh6zxvkMqGVOWnI4SsXUqvZdzquIkyeIACboRg09xaC96KQefd8xjIXTWM1mLxvlIoQcjiCrjoPkrJF X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Nov 2026 08:38:06.0977 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: ba2a458f-593f-49c3-2c46-08df3e3cc6a2 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BY1PEPF000264B4.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA9PR12MB666623 On 07/11/2026 22:24, netdev-bot+sashiko@kernel.org wrote: > Thank you for your contribution! Sashiko AI review found 1 potential > issue(s) to consider. > > Critical: 0 · High: 0 · Medium: 1 · Low: 0 > > If you believe none of the issues are legitimate, please reply to each > issue of Medium severity or higher and explain why the AI is wrong. > If any of them are legitimate and you plan to respin, please let patchwork > know by including "pw-bot: cr" as a separate line at the end of your reply > (one such reply per series is enough). > > - [Medium] The commit "RDMA/mlx5: Require IB_QPT_DRIVER for the DC vendor > QP types" fixes a regression that userspace can trigger, but its… > > -- > > RDMA/mlx5: Require IB_QPT_DRIVER for the DC vendor QP types > > This patch changes process_vendor_flags() in drivers/infiniband/hw/mlx5/qp.c > so that it rejects MLX5_QP_FLAG_TYPE_DCI and MLX5_QP_FLAG_TYPE_DCT unless > the QP was requested as IB_QPT_DRIVER. Without this check, an RC/UC/UD QP > that carries a DC flag becomes a DC QP and skips the dct capability check > in check_qp_type(). > >> Accept the DC type flags only on IB_QPT_DRIVER, the type userspace >> uses to create DC QPs. >> >> Signed-off-by: Yishai Hadas > > [Severity: Medium] > Should this patch carry a Fixes: tag and Cc: stable? Userspace can reach > the behavior it fixes, and nothing in the message tells stable maintainers > to pick it up. Right, V1 will add the Fixes line. Yishai