From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from BYAPR05CU005.outbound.protection.outlook.com (mail-westusazon11010012.outbound.protection.outlook.com [52.101.85.12]) (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 65CF84611CC; Mon, 11 May 2026 17:28:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.85.12 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778520514; cv=fail; b=h4BREu9BzyjrHblaHH6e9OPTxAyRzOCI+l6HrfSiw3gl+mcz1mePKMt4+0b5J7ngKtjQL2+szIDTwwlywIh5CE0pMuYxKAbK4HRjqkrqw8V02FdxegzyeSHYkfCq174PInn2Jwq4+WILsDGwGEusQJSmiW1EpG+I8GqQcFsJRUU= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778520514; c=relaxed/simple; bh=G2TWKyWHa+9FXMlI4yWwjug+BfdXDYuGeoCB/jC4u78=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=tvE/HOlDzmjPQyj/t7aG/Ut7B3EP4PobkEPUTvu9om7uzmftqDUMGeMWAC5bExTDM/480OxGK5QwbEIbSIcwLUnTI/W0fhs0oIuz3RUtVEMFl8YB7ZBXTtVpUWfYgpHMsWZFvSbPSY3lQDRPN/BUpnCbsdqNp957mSr9gDj2zaQ= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=ctSmugKy; arc=fail smtp.client-ip=52.101.85.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="ctSmugKy" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=MC57sF3uSEjVSEmDImQRbpNnB733+BBHfF7Vsw3BAxPio9/5eLAxlIiK0sEOROxwAnmzDbL3v2Wub/ZkgLt5ADaHkzXrMcNBeKSCBErb95k3PKD3AQk9HYuLWpjLKG45G2w6BD7OJLnGh9Rr3hOcbb6c8ZiO3Cg1IyS6nc7diSXvEvKMzYV3K8eGAOiGDwBz/z4rYTkRAOmlcu9LczZ/oTCX2WIPQ3y66pJkb8AR/k7DhOYdplWM7hxepg6EIAr4r/qYhTlo3GzIwA47OrrMhmg6up1C54CWFxk95h7SI8wYe8N3GrsYTZR6CxcnyPzALFabjf1zIWoCMdnct4Gd+g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=0DRRCHHoHycljAKAOVLDCjjUFY9jAfMCR+BEMu87C2g=; b=lKo1PtQoxHtITpI1BQw67QDkou/0/akR+GnOdbSSW6W1ntiNihffClIVeUbuzGm33CfEiTmkOmKzd46b+kCzOYSnW0KheeYpsxU5p+8dSWk6C4jhraX/4yM3VqFsODwTSh38WrZsjcr6N9tT/kDUbGlyYzTFkWMSmNlLkvrHH4+tcXfqsO375yUb0urwjiUeA2p7PoYpwCokOenJI3LV9RMl7TJaAhspyWOztKjE8fZdduMyOYoNyV64YRhLZvBy8rAEJv7Zq6EHeQayb06RowPK/zAAX1KEOtpPp6ZIr5kwLYRLS9OceaaaX9oneGDzmguIEwfuQ0olF5AK0ISPxw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.161) smtp.rcpttodomain=google.com smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=0DRRCHHoHycljAKAOVLDCjjUFY9jAfMCR+BEMu87C2g=; b=ctSmugKyhbn+rJ6ASRfRei9kXvtQ9vsTY/7t+PWy80BTwjE9RwTq4zIiHAmJ9pM6w1T5DbqoBrxiE17E3L1OcAAGvx70qnyIv3Mgsv4zdCfsGMYriuJPnHw9hv+KC+cfwNkV17UwbaBEw7tFdz3BHQNWEkjtih5QhdGQfNaqg1FGN1HRPNXmuadsEfL0Mtk0E8fBYeNmdY7v0n/O94PEjCffCSmK1LeNXYm4XMtDL/anegZzafpvqjHQLULVobfwk1xhEhCTPHXdHAHRkopJBeBSproOQB7u1E7OGci65xCYHBetPfAVj6CoWzRQJOlEUBMH9gcNjN59ANwczD/hcw== Received: from DM6PR01CA0009.prod.exchangelabs.com (2603:10b6:5:296::14) by DM6PR12MB4354.namprd12.prod.outlook.com (2603:10b6:5:28f::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9891.23; Mon, 11 May 2026 17:28:28 +0000 Received: from SA2PEPF000015C8.namprd03.prod.outlook.com (2603:10b6:5:296:cafe::28) by DM6PR01CA0009.outlook.office365.com (2603:10b6:5:296::14) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.9891.23 via Frontend Transport; Mon, 11 May 2026 17:28:28 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.161) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.161 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.161) by SA2PEPF000015C8.mail.protection.outlook.com (10.167.241.198) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.25.13 via Frontend Transport; Mon, 11 May 2026 17:28:28 +0000 Received: from rnnvmail204.nvidia.com (10.129.68.6) by mail.nvidia.com (10.129.200.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Mon, 11 May 2026 10:28:05 -0700 Received: from rnnvmail201.nvidia.com (10.129.68.8) by rnnvmail204.nvidia.com (10.129.68.6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Mon, 11 May 2026 10:28:04 -0700 Received: from vdi.nvidia.com (10.127.8.10) by mail.nvidia.com (10.129.68.8) with Microsoft SMTP Server id 15.2.2562.20 via Frontend Transport; Mon, 11 May 2026 10:28:00 -0700 From: Tariq Toukan To: Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , "David S. Miller" CC: Saeed Mahameed , Leon Romanovsky , Tariq Toukan , Mark Bloch , Nimrod Oren , Yael Chemla , Carolina Jubran , Simon Horman , Gal Pressman , Kees Cook , Dragos Tatulea , , , Subject: [PATCH net-next 5/5] net/mlx5e: increase RSS indirection table spread factor Date: Mon, 11 May 2026 20:27:19 +0300 Message-ID: <20260511172719.330490-6-tariqt@nvidia.com> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20260511172719.330490-1-tariqt@nvidia.com> References: <20260511172719.330490-1-tariqt@nvidia.com> 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: SA2PEPF000015C8:EE_|DM6PR12MB4354:EE_ X-MS-Office365-Filtering-Correlation-Id: e93986bf-5f88-4282-4d66-08deaf82b72e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|7416014|376014|36860700016|18002099003|56012099003|22082099003|11063799003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(82310400026)(7416014)(376014)(36860700016)(18002099003)(56012099003)(22082099003)(11063799003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: EBeqxH3zRSM9CL8v5xp7qNT5Oqjvro12rMxP05hPRlfYAgRi5yic386YLvglvxYiDv2zL9TDO6bil64tHZoZzDKsOtrlYy2JtmUsj2kk2hXcn+6rIXKCqTi9RbD9CP9a2XhZClrKnNrbTa0I1EJupz7lVaOXbIAmFHPRV88MwuboYQvenOwTG4fZL+zB/kxxy3OxNzaS5cTnkz+K/Rws/2sE9srnk4OyO+/5vP/yRM9SxaDl0egY3xaqSRX3S31+A/9umtly6lfQbEELk8aliaBY/YUvL+XIicjCsCDPB+Uguyca4jKUmsueOug77abdnB117Irzb8FE8QdHCz1MAIpixUaQUR4aGAwBG2Ilm/dRZXp952oo/4/UWIlIk+f43zCPHJCKxnOYri/392CSAg3lNQvjtFQR8OIYrlUWuSipZVz1C/BOkOeDPZfAapNN X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 May 2026 17:28:28.5573 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e93986bf-5f88-4282-4d66-08deaf82b72e X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF000015C8.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4354 From: Yael Chemla Increase the RQT uniform spread factor from 2 to 4 so that each channel gets more indirection table entries and traffic is spread more evenly. For num_channels > 64 imbalance drops from up to ~50% to up to ~25%. For 64 or fewer channels the 256 entry minimum already provides at least 4x coverage and the table size is unchanged by this commit. This satisfies the minimum 4x coverage requirement validated by the generic RSS selftest commit 9e3d4dae9832 ("selftests: drv-net: rss: validate min RSS table size"). The 4x spread factor is best-effort and the table size is always capped by the device's log_max_rqt_size capability. Signed-off-by: Yael Chemla Reviewed-by: Nimrod Oren Signed-off-by: Tariq Toukan --- drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h b/drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h index 680700e7437f..c6d0a92b132c 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rqt.h @@ -7,7 +7,7 @@ #include #define MLX5E_INDIR_MIN_RQT_SIZE (BIT(8)) -#define MLX5E_UNIFORM_SPREAD_RQT_FACTOR 2 +#define MLX5E_UNIFORM_SPREAD_RQT_FACTOR 4 struct mlx5_core_dev; -- 2.44.0