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Fri, 17 Jul 2026 00:51:44 -0700 From: Tariq Toukan To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , , Paolo Abeni CC: Alexei Lazar , Carolina Jubran , Leon Romanovsky , , , Mark Bloch , Pavan Chebbi , Saeed Mahameed , Tariq Toukan , Gal Pressman Subject: [PATCH net V2 1/2] net/mlx5e: Report zero bandwidth for non-ETS traffic classes Date: Fri, 17 Jul 2026 10:51:24 +0300 Message-ID: <20260717075125.1244877-2-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20260717075125.1244877-1-tariqt@nvidia.com> References: <20260717075125.1244877-1-tariqt@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SA2PEPF000015CC:EE_|CY3PR12MB9680:EE_ X-MS-Office365-Filtering-Correlation-Id: 3006570e-0105-4603-39bb-08dee3d8479a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|36860700016|23010399003|82310400026|11063799006|18002099003|22082099003|56012099006|10067099003; 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)(7416014)(376014)(1800799024)(36860700016)(23010399003)(82310400026)(11063799006)(18002099003)(22082099003)(56012099006)(10067099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: pfyzYv6PKB/0QptQWtPn6qSRe3Z+k9WriwThG5FuW3xoi84ldgnEhkWCT1Q+hL9tp5ZAWNXTwqmcCVHP8B+10SkdC5mQV8BUvTO/Q0pyqv9xbv21BwNM9OJO5s/SD0ohH5zKpjjvBph7XFqEmhXvVGse49lIEsdHov6UShnMB7SQ8KoDQWxH2iUr/LaX0DN1WNDrI18QeXVbNj+SazGrZSuaGnYQRIY+Q5Lzch4TAGMf/mxgMJLls6ztvFWBtkTEMWa9yNJxa3hsw+CEi51qe6w7u6gvu6ySxw8I2C1HuVhNT2lPbav30QYmlGEarcpSjZ0fsXLzAAL5iQ00iNEX9NQ5iWjJaDcs/WUGHrnJeXRwLox1lGJRX5bKluErmjue+4xwnj9qiXPVIp8rcBFIfefAjVUYMoQcUZiKGW6F4XmEGjq3PrOO6t5casZ9Ac6b X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Jul 2026 07:51:58.5575 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3006570e-0105-4603-39bb-08dee3d8479a 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: SA2PEPF000015CC.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY3PR12MB9680 Content-Type: text/plain; charset="utf-8" From: Alexei Lazar The IEEE 802.1Qaz standard defines that bandwidth allocation percentages only apply to Enhanced Transmission Selection (ETS) traffic classes. For STRICT and VENDOR transmission selection algorithms, bandwidth percentage values are not applicable. Currently for non-ETS 100 bandwidth is being reported for all traffic classes in the get operation due to hardware limitation, regardless of their TSA type. Fix this by reporting 0 for non-ETS traffic classes. Fixes: 820c2c5e773d ("net/mlx5e: Read ETS settings directly from firmware") Signed-off-by: Alexei Lazar Reviewed-by: Carolina Jubran Signed-off-by: Tariq Toukan Reviewed-by: Pavan Chebbi --- drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/n= et/ethernet/mellanox/mlx5/core/en_dcbnl.c index 4b86df6d5b9e..762f0a46c120 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c @@ -173,6 +173,13 @@ static int mlx5e_dcbnl_ieee_getets(struct net_device *= netdev, } memcpy(ets->tc_tsa, priv->dcbx.tc_tsa, sizeof(ets->tc_tsa)); =20 + /* Report 0 for non ETS TSA */ + for (i =3D 0; i < ets->ets_cap; i++) { + if (ets->tc_tx_bw[i] =3D=3D MLX5E_MAX_BW_ALLOC && + priv->dcbx.tc_tsa[i] !=3D IEEE_8021QAZ_TSA_ETS) + ets->tc_tx_bw[i] =3D 0; + } + return err; } =20 --=20 2.44.0 From nobody Sat Jul 25 05:59:37 2026 Received: from SA9PR02CU001.outbound.protection.outlook.com (mail-southcentralusazon11013050.outbound.protection.outlook.com [40.93.196.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EC1103D4133; 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Miller" , Eric Dumazet , Jakub Kicinski , , Paolo Abeni CC: Alexei Lazar , Carolina Jubran , Leon Romanovsky , , , Mark Bloch , Pavan Chebbi , Saeed Mahameed , Tariq Toukan , Gal Pressman Subject: [PATCH net V2 2/2] net/mlx5e: Reject unsupported CB Shaper TSA in ETS validation Date: Fri, 17 Jul 2026 10:51:25 +0300 Message-ID: <20260717075125.1244877-3-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20260717075125.1244877-1-tariqt@nvidia.com> References: <20260717075125.1244877-1-tariqt@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF0000B06E:EE_|DS0PR12MB6440:EE_ X-MS-Office365-Filtering-Correlation-Id: 20744077-4bab-49fa-f700-08dee3d84911 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|23010399003|7416014|376014|82310400026|1800799024|6133799003|56012099006|11063799006|10067099003|18002099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 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)(36860700016)(23010399003)(7416014)(376014)(82310400026)(1800799024)(6133799003)(56012099006)(11063799006)(10067099003)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: NBpZEPXHm/I0d4fhgdF7EVnSR5lvW+TNw3NBCQABnAVMBKb25SZncmsFV0xAWrlpUqD4iZqz0gv6HGaTLgCLhVCC8O3KAxu8y4WwP6lVAvxPkKU2OYc19setJg9gQ3yb8mDhCQ7VA6ouCSHoGBW6u409xdREeNvXeYUMoPpvboTP5RPaN2JaCrWduI3Hu0G0ZWpHGUKgVz51hSg5E16Ka3bRUQjG1N7XZYAHE+CHx8gLxEhhJ5pRvIsccdXAz5zZ7Pf99yw8DgW9fE4BRIQK0cgvNzcPZYqRq5w0xOZ2Gn8pLuOTu5ltd/Y5o2NGZB3Q6jkxaKoWzb3d0fvDUOF9qVXsKdOYNETmDT59nZdxznyBI9UcdiX0XSSIAkdRc853ucvNBrSe1Yp8LjH5fzozGydvACCzhYM2d+yvqTk9qFFtbam3zr0cM+O7obNUhadZ X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Jul 2026 07:52:00.9589 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 20744077-4bab-49fa-f700-08dee3d84911 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: BN3PEPF0000B06E.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB6440 Content-Type: text/plain; charset="utf-8" From: Alexei Lazar Credit Based (CB) TSA is not supported by the mlx5 driver, so reject any configurations that specify it. Fixes: 08fb1dacdd76 ("net/mlx5e: Support DCBNL IEEE ETS") Signed-off-by: Alexei Lazar Reviewed-by: Carolina Jubran Signed-off-by: Tariq Toukan Reviewed-by: Pavan Chebbi --- drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c b/drivers/n= et/ethernet/mellanox/mlx5/core/en_dcbnl.c index 762f0a46c120..00e706e1ede1 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c @@ -324,6 +324,14 @@ static int mlx5e_dbcnl_validate_ets(struct net_device = *netdev, } } =20 + for (i =3D 0; i < IEEE_8021QAZ_MAX_TCS; i++) { + if (ets->tc_tsa[i] =3D=3D IEEE_8021QAZ_TSA_CB_SHAPER) { + netdev_err(netdev, + "Failed to validate ETS: CB Shaper is not supported\n"); + return -EOPNOTSUPP; + } + } + /* Validate Bandwidth Sum */ for (i =3D 0; i < IEEE_8021QAZ_MAX_TCS; i++) { if (ets->tc_tsa[i] =3D=3D IEEE_8021QAZ_TSA_ETS) { --=20 2.44.0