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Thu, 18 Dec 2025 07:58:54 -0800 From: Edward Srouji To: , Leon Romanovsky , Saeed Mahameed , Tariq Toukan , Mark Bloch , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jason Gunthorpe CC: , , , Or Har-Toov Subject: [PATCH rdma-next 09/10] RDMA/mlx5: Raise async event on device speed change Date: Thu, 18 Dec 2025 17:58:53 +0200 Message-ID: <20251218-vf-bw-lag-mode-v1-9-7d8ed4368bea@nvidia.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20251218-vf-bw-lag-mode-v1-0-7d8ed4368bea@nvidia.com> References: <20251218-vf-bw-lag-mode-v1-0-7d8ed4368bea@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1766069544; l=1432; i=edwards@nvidia.com; s=20251029; h=from:subject:message-id; bh=h5wZW1LI1kWmTGlwtXPO+VEysmFaSQ5nBUeqft/eCio=; b=BSSxujtTgcHm+t59ewdX32GQaVWakv6mtB5FTnbdx5v8Kn3t04uu9SCK0TEaOrIj+P0CQ6mux ljOCMXa63eLDhGV58+Z+5BHoXNcVVGO80WwfUSKVT5fxkwFmAk6Cbrq X-Developer-Key: i=edwards@nvidia.com; a=ed25519; pk=VME+d2WbMZT5AY+AolKh2XIdrnXWUwwzz/XLQ3jXgDM= Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF000001F2:EE_|SJ1PR12MB6169:EE_ X-MS-Office365-Filtering-Correlation-Id: d2fb7987-3717-4bf6-13a4-08de3e4e63b6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|7416014|82310400026|376014|1800799024|921020; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Dec 2025 15:59:13.4162 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d2fb7987-3717-4bf6-13a4-08de3e4e63b6 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001F2.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ1PR12MB6169 From: Or Har-Toov Raise IB_EVENT_DEVICE_SPEED_CHANGE whenever the speed of one of the device's ports changes. Usually all ports of the device changes together. This ensures user applications and upper-layer software are immediately notified when bandwidth changes, improving traffic management in dynamic environments. This is especially useful for vports which are part of a LAG configuration, to know if the effective speed of the LAG was changed. Signed-off-by: Or Har-Toov Reviewed-by: Mark Bloch Signed-off-by: Edward Srouji --- drivers/infiniband/hw/mlx5/main.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5= /main.c index 40284bbb45d6..bea42acbeaad 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -2838,6 +2838,14 @@ static int handle_port_change(struct mlx5_ib_dev *ib= dev, struct mlx5_eqe *eqe, case MLX5_PORT_CHANGE_SUBTYPE_ACTIVE: case MLX5_PORT_CHANGE_SUBTYPE_DOWN: case MLX5_PORT_CHANGE_SUBTYPE_INITIALIZED: + if (ibdev->ib_active) { + struct ib_event speed_event =3D {}; + + speed_event.device =3D &ibdev->ib_dev; + speed_event.event =3D IB_EVENT_DEVICE_SPEED_CHANGE; + ib_dispatch_event(&speed_event); + } + /* In RoCE, port up/down events are handled in * mlx5_netdev_event(). */ --=20 2.47.1