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client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by MN1PEPF0000F0E5.mail.protection.outlook.com (10.167.242.43) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.92.5 via Frontend Transport; Sat, 6 Jun 2026 05:00:16 +0000 Received: from satlexmb07.amd.com (10.181.42.216) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.41; Sat, 6 Jun 2026 00:00:15 -0500 Received: from xhdipdslab46.xilinx.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server id 15.2.2562.41 via Frontend Transport; Sat, 6 Jun 2026 00:00:12 -0500 From: Abhijit Gangurde To: , , , , , , , CC: , , , , , Abhijit Gangurde Subject: [for-next v3 0/5] ionic: RDMA completion timestamping support Date: Sat, 6 Jun 2026 10:29:58 +0530 Message-ID: <20260606050003.3648306-1-abhijit.gangurde@amd.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MN1PEPF0000F0E5:EE_|MN2PR12MB4288:EE_ X-MS-Office365-Filtering-Correlation-Id: 16a81a77-71d5-406f-7f6b-08dec3887fcf X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|7416014|82310400026|376014|36860700016|11063799006|6133799003|18002099003|56012099006; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: eL7VVs4p+Z2whBRQxs0HicbwJonuw2EHpbi8mv+re3KGcnN5RCOtTrmWJP4LnQ4BWWwYK4cpzfF8TtF5mk9JBfoaHHkGguwiKLO7UZbgUVKN/2NijUcwGnO3CxO2T5ahvAlhsummu7JHFOLmAYhWmnoNlYSRWsXWS7IG5O4F8tRQCFIDUqrdBKptHCKFvnL6Hxp/3onRt+v8/izajXt3zU3NGj5W//g+W7VuLn0maMSPnpEWQl1znyV8Yf4UN/EwJCQFL1In6k0EPVExm2lWFTvEQ1MQzp3qejJj/zVkygFXSZDgFaiDR9AFEHJ8DKIMf+dhcnq2gpLyU+sUJbjN9EMvudQTEPlsY7MT2iYpao3MN0/ydxBT53hnu38LFgSC9UNVdDJL++0Y4QHszgS8Rs5PoJvYeX9EpYZLnzJqHirxc2dt6GnomW4M6mI1XDGf X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Jun 2026 05:00:16.0107 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 16a81a77-71d5-406f-7f6b-08dec3887fcf X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: MN1PEPF0000F0E5.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4288 Hi, This series adds RDMA completion timestamp support for ionic. It enables PHC registration for RDMA timestamp capability, exposes a PHC state page for safe user-space reads, maps that PHC state through RDMA ucontext mmap, and extends the RDMA CQE format to carry completion timestamps. With this, user space can read completion timestamps and convert them to wall time with low overhead. Provider's PR: https://github.com/linux-rdma/rdma-core/pull/1724 v3: - Renamed ib_uverbs_phc_state to ib_uverbs_clock_info - Moved mlx5 to use the common clock info structure - Addressed review feedback from Sashiko v2: - changed ionic_phc_state to ib_uverbs_phc_state and moved it under ib_user_verbs.h - https://lore.kernel.org/linux-rdma/20260512092623.1157199-1-abhijit.gangurde@amd.com/ v1: - https://lore.kernel.org/all/20260401102501.3395305-1-abhijit.gangurde@amd.com/ Abhijit Gangurde (5): net: ionic: register PHC for rdma timestamping net: ionic: Add PHC state page for user space access RDMA/ionic: map PHC state into user space RDMA/ionic: add completion timestamp to CQE format RDMA/mlx5: move mlx5 clock info to common struct ib_uverbs_clock_info .../infiniband/hw/ionic/ionic_controlpath.c | 34 ++++++++++ drivers/infiniband/hw/ionic/ionic_datapath.c | 43 ++++++------- drivers/infiniband/hw/ionic/ionic_fw.h | 12 +++- drivers/infiniband/hw/ionic/ionic_ibdev.h | 2 + drivers/infiniband/hw/ionic/ionic_lif_cfg.c | 2 + drivers/infiniband/hw/ionic/ionic_lif_cfg.h | 1 + .../ethernet/mellanox/mlx5/core/lib/clock.c | 8 +-- .../ethernet/pensando/ionic/ionic_ethtool.c | 12 ++-- .../net/ethernet/pensando/ionic/ionic_if.h | 1 + .../net/ethernet/pensando/ionic/ionic_lif.c | 5 +- .../net/ethernet/pensando/ionic/ionic_lif.h | 3 +- .../net/ethernet/pensando/ionic/ionic_phc.c | 63 ++++++++++++++++--- include/linux/mlx5/driver.h | 2 +- include/uapi/rdma/ib_user_verbs.h | 33 ++++++++++ include/uapi/rdma/ionic-abi.h | 1 + include/uapi/rdma/mlx5-abi.h | 3 + 16 files changed, 183 insertions(+), 42 deletions(-) -- 2.43.0