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Miller" CC: Saeed Mahameed , Tariq Toukan , "Mark Bloch" , Leon Romanovsky , , , , Gal Pressman , Moshe Shemesh , Nimrod Oren , Carolina Jubran , Dragos Tatulea Subject: [PATCH net-next] net/mlx5e: Add hds-thresh query support via ethtool Date: Tue, 17 Mar 2026 12:49:34 +0200 Message-ID: <20260317104934.16124-1-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF0002BA51:EE_|SA3PR12MB7829:EE_ X-MS-Office365-Filtering-Correlation-Id: 54086903-9a92-42f4-d3db-08de8412f7e7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|1800799024|36860700016|18002099003|56012099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(376014)(82310400026)(1800799024)(36860700016)(18002099003)(56012099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 3MXmkX/E3xImWMmzuVdAT7L8lb8dRLSGFBV+pyweFfaxf+amRxnGeqJJqJ+tlllOYSynbkyR44cWoejzXygHPjFWUl9rzmLBdMaponelNGb6FFQfqB06wlaVRQ5a6j3wUhlhXcEeKy9xe8SmgDDimgUZ4vVHXMxgFebWPtQt18EOZFCk7j3TIUE02/1M0yv+loB+4QTWk5GgvCVbft3lgFUBF4qwSrpSP3VMEmYBvABKjltlQUNxojUMqPJuGNL+Mfa7LQLLs2bH6n0RuwOV0spQOW7+ydRtYc1p2w7jcHNlf9HwZLUXFyUkxJScwatDkpYGBh1hL7bMCnXy00qO5r09r0mbhitjT1KAXF/lSwtTOGv1biYmFae7XUp+qjvU+tdYgD8a6CHEynlCQJXaip+57pK9H59cs2GBeMsxPLCSy3eyk3P01H7aU29RSj4k X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Mar 2026 10:50:13.5404 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 54086903-9a92-42f4-d3db-08de8412f7e7 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: SN1PEPF0002BA51.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA3PR12MB7829 From: Nimrod Oren Add support for reporting HDS (Header-Data Split) threshold via ethtool. When applicable, mlx5 hardware splits packets of all sizes with no configurable threshold, so report both hds-thresh and hds-thresh-max as 0 (i.e. always split regardless of size). Signed-off-by: Nimrod Oren Reviewed-by: Carolina Jubran Reviewed-by: Dragos Tatulea Signed-off-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c index 4a8dc85d5924..bb61e2179078 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c @@ -371,6 +371,9 @@ void mlx5e_ethtool_get_ringparam(struct mlx5e_priv *priv, param->tx_max_pending = 1 << MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE; param->rx_pending = 1 << priv->channels.params.log_rq_mtu_frames; param->tx_pending = 1 << priv->channels.params.log_sq_size; + + kernel_param->hds_thresh = 0; + kernel_param->hds_thresh_max = 0; } static void mlx5e_get_ringparam(struct net_device *dev, @@ -2735,7 +2738,8 @@ const struct ethtool_ops mlx5e_ethtool_ops = { ETHTOOL_COALESCE_USE_ADAPTIVE | ETHTOOL_COALESCE_USE_CQE, .supported_input_xfrm = RXH_XFRM_SYM_OR_XOR, - .supported_ring_params = ETHTOOL_RING_USE_TCP_DATA_SPLIT, + .supported_ring_params = ETHTOOL_RING_USE_TCP_DATA_SPLIT | + ETHTOOL_RING_USE_HDS_THRS, .get_drvinfo = mlx5e_get_drvinfo, .get_link = ethtool_op_get_link, .get_link_ext_state = mlx5e_get_link_ext_state, base-commit: 348baefbb635cbb448e154f38c93657d4cf23936 -- 2.44.0