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Sun, 11 Jan 2026 22:51:16 -0800 From: Tariq Toukan To: Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Mark Bloch , , , CC: Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , "David S. Miller" , Gal Pressman , "Moshe Shemesh" , Dragos Tatulea , "Alexei Lazar" Subject: [PATCH mlx5-next] net/mlx5: Add IFC bits for extended ETS rate limit bandwidth value Date: Mon, 12 Jan 2026 08:50:08 +0200 Message-ID: <1768200608-1543180-1-git-send-email-tariqt@nvidia.com> X-Mailer: git-send-email 2.8.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH1PEPF0000AD7F:EE_|LV5PR12MB9755:EE_ X-MS-Office365-Filtering-Correlation-Id: c76fb72f-271f-4b6e-da41-08de51a7096d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|36860700013|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?JrXTlEzIiIXs8MlhDtzxt3ImC5742i2SumPGkyebOk8XosnHBbsGtm9NvPSS?= =?us-ascii?Q?+YjxBvypruLDzqPN6SdrgUfjh+W39nNkRdN2V2/5GE7dr3//69TGfAEPPwvu?= =?us-ascii?Q?zDry/TgC3K3RvBs95ZoYSKteIndjpaxdfF99pYSwUENG5ULl196ct5hHvvxE?= =?us-ascii?Q?Cdmn3Tv0+X1nvC78XsIz6z8JHbwQOfKTd/LPzTAQoL0Y7EfnkudTQaRj+tLu?= =?us-ascii?Q?kYLcrRRBwJQHmdrLxZSnjM4iwaCV90uibDyAuNwuUdKE6xp3yA8U3WFVbZgH?= =?us-ascii?Q?LZlnZe7YqjjJoeS7LUSNGBLsOuVLgpWYbmaioK09ghLIcOGj6pJX0PbsorwU?= =?us-ascii?Q?vFqx3g2bRum2je3qhqk8qgdglG6BUU0hhtx4f5UqsJ4j2xosku341oHRb9EJ?= =?us-ascii?Q?ZmBIQnBcSWSM299yL2ef4W/cDRFluVjFhsLclgj0xtMdXlBjTE53+iarrIEM?= =?us-ascii?Q?63U7hJeDr5q7B7fNrGWbHI+KBLy9efc3ELuBxSaMdbyDk4On65Asayqz89yk?= =?us-ascii?Q?/XBNdnYNs1uQCTftHN7xDjo8imZnJOzXKIT2GzzpnFEnrn8275SSrHMhG51g?= =?us-ascii?Q?3XMbtPgw1ay+SDMtlQGLSTbz1TpK18e+Kt9GrKoyAPIvLMiLdWjInmJyaPx/?= =?us-ascii?Q?QNnt3lkrWtI2Slt4UWww8J2GDDLdN5BjagyMaCsiEr3Fh2eb0Uwu8R7ZZ2O2?= =?us-ascii?Q?KbSObNxzDmWE3YfjDRwpxHhdPdJHiDKHkS14GuWRdfXfSmQMgA4ieu0r7/+W?= =?us-ascii?Q?Id9RtMbXwq6Z9SeTR7oczFRIT5VQnuHbv9rB1utqksfFwVYlorlXoqJFaVAh?= =?us-ascii?Q?AjbbhVty00W6CVF8njOgMz8XngP379IKPKOMWzNY0jN7xdIq4WYw1ZBYMNg6?= =?us-ascii?Q?4zbhwXjqZ1ZFA57Q/q281k9zI+EWa86iyGYMev31mwsLCr3o2faCKVSP17zF?= =?us-ascii?Q?XHhbaQjoly6jazjV7jrFARfLSqhUyGqay+KW1L1vvS8KBhXl77mjWhBy2T68?= =?us-ascii?Q?vo/oiyDBSgrpMcl9kUSkDQ4wGlE9Lcw/DTwRVhfdRB8uWh1mZigoktHJlDWl?= =?us-ascii?Q?2D9LKSZFyAXkMXGSmWhJ85xuK22bB0cISFdUbK4vdDazD+7JB7HM7LSt0urM?= =?us-ascii?Q?sBd8XBI8H56LxnuYqB9rJlVvsEpp23lc/5hMkXNOPQ9ckQBsYjsl/ZeYmfr6?= =?us-ascii?Q?xQMYGWPB4vfKd5KuelYGa4n4l2jw6BTROq59ff2j+eei18yLNzTvgHMkmZ3I?= =?us-ascii?Q?+F/YliRr9RljyYK7zrw77EzbLCFd+SoffFf8UDQE5q2ol91VqmLidT6+Rdjb?= =?us-ascii?Q?eb6l6FSUBqwyTrjAyjpl2hJXk/6x5AjZ5SIY5yKNKuK+U8hxvqrcRpD7WIZs?= =?us-ascii?Q?yN4qe4O/T8s92+Ozh4gxva28wBFBC3rxqso5uWZzzgSHZmjVwvKrxCOAGDx1?= =?us-ascii?Q?bSjfemhuHfq8NBZRGyst6hA7z8i7baj7EvTF3MUlhv4D3vqjJjmcKTizcJJc?= =?us-ascii?Q?nVqyF+kYV0GE0qTgd1sZzfTNHg26Ek+SRQHT0SzYja0E12Zp5Q67Al9duIP5?= =?us-ascii?Q?FRUpGiGCjO40Bfv2lLc=3D?= X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(376014)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Jan 2026 06:51:39.1439 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: c76fb72f-271f-4b6e-da41-08de51a7096d X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH1PEPF0000AD7F.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV5PR12MB9755 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Alexei Lazar Add hardware interface definitions to support extended bandwidth rate limiting in the QoS Enhanced Transmission Selection (ETS) configuration. The new fields include: - max_bw_value: extended from 8-bit to 16-bit in ets_tcn_config_reg, simplifying the implementation by using a single field instead of separate MSB/LSB fields. - qetcr_qshr_max_bw_val_msb: capability bit in qcam_qos_feature_cap_mask indicating device support for the extended 16-bit max_bw_value field. These interface additions are prerequisites for increasing the per-TC rate limit beyond 255 Gbps to support higher-bandwidth NICs. Signed-off-by: Alexei Lazar Reviewed-by: Dragos Tatulea Reviewed-by: Gal Pressman Signed-off-by: Tariq Toukan --- include/linux/mlx5/mlx5_ifc.h | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h index e844cfa4fe0a..775cb0c56865 100644 --- a/include/linux/mlx5/mlx5_ifc.h +++ b/include/linux/mlx5/mlx5_ifc.h @@ -11009,7 +11009,9 @@ struct mlx5_ifc_qcam_access_reg_cap_mask { }; =20 struct mlx5_ifc_qcam_qos_feature_cap_mask { - u8 qcam_qos_feature_cap_mask_127_to_1[0x7F]; + u8 qcam_qos_feature_cap_mask_127_to_5[0x7B]; + u8 qetcr_qshr_max_bw_val_msb[0x1]; + u8 qcam_qos_feature_cap_mask_3_to_1[0x3]; u8 qpts_trust_both[0x1]; }; =20 @@ -11965,8 +11967,7 @@ struct mlx5_ifc_ets_tcn_config_reg_bits { =20 u8 reserved_at_20[0xc]; u8 max_bw_units[0x4]; - u8 reserved_at_30[0x8]; - u8 max_bw_value[0x8]; + u8 max_bw_value[0x10]; }; =20 struct mlx5_ifc_ets_global_config_reg_bits { base-commit: f0b2fde98065e49795ce6824837b3f53fdf16e5d --=20 2.31.1